Scholz's star - shown in this artist's impression - is currently 20 light-years away. But it once came much closerExcerpt from bbc.comAn alien star passed through our Solar System just 70,000 years ago, astronomers have discovered. No othe...
Tag: passing (page 2 of 7)
“The ingredients for life are plentiful, and we now know that habitable environments are plentiful,” says Professor Charley Lineweaver, a down-under astrophysicist.
Lineweaver and PhD student Tim Bovaird worked this out by reviewing the data on exoplanets discovered by the famed Kepler planet-hunter space scope. Kepler naturally tends to find exoplanets which orbit close to their parent suns, as it detects them by the changes in light they make by passing in front of the star. As a result, most Kepler exoplanets are too hot for liquid water to be present on their surfaces, which makes them comparatively boring.
Good planets in the "goldilocks" zone which is neither too hot nor too cold are much harder to detect with Kepler, which is a shame as these are the planets which might be home to alien life - or alternatively, home one day to transplanted Earth life including human colonists, once we've cracked that pesky interstellar travel problem.
However there exists a thing called the Titius-Bode relation - aka Bode's Law - which can be used, once you know where some inner planets are, to predict where ones further out will be found.
Assuming Bode's Law works for other suns as it does here, and inputting the positions of known inner exoplanets found by Kepler, Lineweaver and Bovaird found that on average a star in our galaxy has two planets in its potentially-habitable zone.
That doesn't mean there are habitable or inhabited planets at every star, of course. Even here in our solar system, apparently lifeless (and not very habitable) Mars is in the habitable zone.
Even so, there are an awful lot of planets in the galaxy, so some at least ought to have life on them, and in some cases this life ought to have achieved a detectable civilisation. Prof Lineweaver admits that the total lack of any sign of this is a bit of a puzzler.
"The universe is not teeming with aliens with human-like intelligence that can build radio telescopes and space ships," admits the prof. "Otherwise we would have seen or heard from them.
“It could be that there is some other bottleneck for the emergence of life that we haven’t worked out yet. Or intelligent civilisations evolve, but then self-destruct.”
Of course, humans - some approximations of which have been around for some hundreds of thousands of years, perhaps - have only had civilisation of any kind in any location for a few thousand of those years. Our civilisation has only risen to levels where it could be detectable across interstellar distances very recently.
There may be many planets out there inhabited by intelligent aliens who either have no civilisation at all, or only primitive civilisation. There may be quite a few who have reached or passed the stage of emitting noticeable amounts of radio or other telltale signs, but those emissions either will not reach us for hundreds of thousands of years - or went past long ago.
It would seem reasonable to suspect that there are multitudes of worlds out there where life exists in plenty but has never become intelligent, as Earth life was for millions of years before early humans began using tools really quite recently.
But the numbers are still such that the apparent absence of star-travelling aliens could make you worry about the viability of technological civilisation if, like Professor Lineweaver, you learn your astrophysics out of textbooks and lectures (and publish your research, as we see here, in hefty boffinry journals like the Monthly Notices of the Royal Astronomical Society).
But if movies, speculofictive novels and TV have taught us anything here on the Reg alien life desk, it is that in fact the galaxy is swarming with star-travelling aliens (and/or humans taken secretly from planet Earth for mysterious purposes in the past, or perhaps humans from somewhere else etc). The reason we don't know about them is that they don't want us to.
listverse.com
The canonical Bible is filled with mysterious characters, many of whom drop in for a cameo, do their thing, and then slide out, never to be heard from again. Some are merely extras, but some have a contextual presence that begs further examination. And some are, well, just weird.
10 Melchizedek
Probably the single most mysterious figure in the Bible, Melchizedek was a priest-king of Salem (later known as Jerusalem) in the time of Abram (Abraham), suggesting a religious organization, complete with ritual and hierarchy, that predated the Jewish nation and their priestly lineage from the tribe of Levi. He is only portrayed as active in one passage, although he is alluded to once in Psalms, and several times in the New Testament’s Epistle to the Hebrews.
Some Jewish disciplines insist that Melchizedek was Shem, Noah’s son. He is thought of, in Christian circles, as a proto-messiah, embodying certain traits later given to Christ. New Testament writings assert that Christ was “a priest forever in the order of Melchizedek,” indicating an older and deeper covenant with God than the Abrahamic-Levite lineage.
Hebrews 7, though presents him in a more unusual light. In verses 3 and 4:
“Without father, without mother, without descent, having neither beginning of days, nor end of life; but made like unto the Son of God; abideth a priest continually. Now consider how great this man was, unto whom even the patriarch Abraham gave the tenth of the spoils.”
Not only do these verses grant Melchizedek a hierarchical level above the most important Jewish patriarch, they assign him mystical qualities. Some take this to mean an earlier incarnation of Christ. Others see it as an ancient manifestation of the Holy Spirit. His identity, role, and theological function have long been debated.
The paucity of scriptural references have added to the mystery, making him a somewhat spectral figure. As such, newer spiritual traditions, as well as New Age quacks, have taken liberties with his persona. Gnostics insisted he became Jesus, and he is cited as a high-level priest in Masonic and Rosicrucian lore. Joseph Smith wrote that he was the greatest of all prophets, and Mormons still trace their priesthood back to him. The Urantia, a 20th-century pseudo-Bible that claims to merge religion, philosophy, and science, insists he’s the first in an evolutionary succession of deification manifestations, with Abraham being his first convert.
There is even a school of thought that Melchizedek is a title or assumed character name, sort of a theological 007, played by a series of Judeo-Christian James Bonds.
The lore of Melchizedek is confusing but deep and fascinating. Apocryphal books give us more details, some cryptic, some relatively mundane. The Second Book of Enoch is particularly informative, insisting Melchizedek was born of a Virgin. When his mother Sophonim (the wife of Noah’s brother Nir) died in childbirth, he sat up, clothed himself, and sat beside her corpse, praying and preaching. After 40 days, he was taken by an archangel to the Garden of Eden, protected by angels and avoiding the Great Flood without passage on Uncle Noah’s ark.
9 Cain’s Wife
Cain was, according to Genesis, the first human ever born. He later killed his younger brother Abel in a hissy fit over his sacrifice of meat being more favored than Cain’s sacrificial fruit basket. God put a mark on Cain and cursed the ground he farmed, forcing him into a life as a wandering fugitive.
That part of the story is fairly well known. Later, though, we read that he settled in the Land of Nod, and, all of a sudden, he has a wife. Absolutely nothing else is mentioned about her. We don’t even know where she came from. In fact, the question of where Cain got his wife, when his immediate family were apparently the only people in the world, has sent many a perceptive young Sunday schooler down the road of skepticism.
Some have posited a mysterious other tribe of people, maybe created after Adam and Eve, maybe even another race or species. But the standard response is that Adam and Eve had many other sons and daughters to populate the Earth. The only way to keep the human race going would be to mate with siblings, nieces, nephews, and cousins.
In fact, though the Holy Bible is silent on her identity, the apocryphal Book of Jubilees tells us exactly who was Cain’s wife: his sister Awan, who bore his son Enoch.
8 Joseph Barsabbas
After Judas Iscariot turned in his resignation by selling out his boss, Jesus’s disciples rushed to fill the open position and bring the number back up to a more theologically apt 12. The remaining disciples, including the newly convinced Thomas, looked over the candidates from the 120 or so adherents who followed Jesus. Then they cast lots to pick who would fill the position.
It went to Matthias, a fairly mysterious character himself. We don’t know where he came from or his previous occupation. Some think he was actually the diminutive Zacchaeus, the tax collector who climbed a sycamore tree to get a better glimpse of Jesus’s ride on the donkey.
The man who lost out was Joseph Barsabbas, also known as Joseph Justus. We know nothing solid about him, even less than we know about Matthias.
There is, however, one bit of interesting speculation. A list of names presented in Mark 6:3 includes some of Christ’s earliest and most loyal adherents. One of these is a man named Joses, and another is James the Just. Biblical scholar Robert Eisenman suggests that James carried on Jesus’s work, and the writer of the Book of Acts assigned him an alias to minimize his importance.
7 The Beloved Disciple
In the Gospel of John, several references are made to “the disciple whom Jesus loved.” This particular favorite is present at the Last Supper, the crucifixion, and after the resurrection. The writer of the Gospel of John even states that the testimony of this disciple is the basis for the text. But there is considerable debate over the identity of this mystery figure.
The most obvious nominee is John the Apostle, one of Christ’s inner circle of 12 and the namesake of the Gospel. But none of the 12 apostles were present at the crucifixion, so that crosses him off the list. Lazarus, resurrected by Christ, is also considered. He seems to have been present at the cited events and is referred to specifically, in the story of His death and resurrection, as “he whom Thou lovest.”
Mary Magdalene, Judas, Jesus’s brother James, or an unnamed disciple, possibly even a Roman or governmental official, have all been considered. There is even a school of thought that John is an interactive gospel, with the reader being the beloved disciple.
6 Simon Magus
“Simony” is the selling of church position or privilege. It is named for Simon Magus, or Simon the Magician, who makes only a brief appearance in the Bible, in Acts 8:9–24. Simon has since become synonymous with heretical thought, and religious exploitation.
He is presented as a powerful magician with a large following of in Samaria, who converts to Christianity and wishes to learn from apostles Peter and Phillip. When he sees the gifts of the Holy Spirit, including speaking in tongues and an ecstatic spiritual state, he offers the men money if they will give him the secret to passing these gifts to others. They are not amused.
Apocryphal texts reveal quite a bit more, like his alleged ability to levitate and even fly, emphasizing that he was something akin to a cult leader in his hometown. It is suggested that his conversion is more for economic purposes than spiritual, and he set himself up as a messianic figure himself, competing for the Jesus dollar with his own homespun theology.
He is thought by some to be a founder of Gnosticism, a patchwork of various religious systems that relied heavily on Judaic and Christian symbolism.
5 Onan
Not unlike Simon Magus, Onan’s brief appearance inspired a name for a particular action.
He was the second son of Abraham’s grandson Judah, the patriarch and namesake of one of the 12 tribes of Israel. His older brother, Er (yes, just “Er”) was “wicked in the sight of the Lord,” so God killed him. What he did to deserve such an execution remains a mystery.
Tradition at the time dictated that Er’s widow, Tamar, become Onan’s wife. Onan had to impregnate her to keep the lineage alive, but he was not as wild about the idea. Maybe it was the thought of impending fatherhood, or Tamar just wasn’t his type. So, taking matters into his own hands, he committed the first recorded act of coitus interruptus. Or, as Genesis 38:9 so poetically put it: “And Onan knew that the seed should not be his; and it came to pass, when he went in unto his brother’s wife, that he spilled it on the ground, lest that he should give seed to his brother.” God was displeased and slew Onan.
The whole tale gets even more sordid. Onan had a younger brother, Shelah. Customarily, he would have been next in line to impregnate Tamar, but Judah forbade it. Tamar, rather than graciously accepting forced spinsterhood, seduced Judah and (became pregnant) by the old man. Judah fathered twins Zerah and Perez, the latter of whom was listed by Matthew as an ancestor of Jesus’s earthly father Joseph...
Some have even suggested that Onan’s death warns that sex is meant only for purposes of reproduction, and not for pleasure.
4 Nicodemus
Nicodemus was a member of the Sanhedrin, a council of men who ruled on Jewish law and governance. He became a friend, follower, and intellectual foil for Jesus, whose egalitarian teachings often ran counter to the Sanhedrin’s rigid decrees. He was also a Pharisee, a leader within the Jewish community who toadied up to the Roman government at the time of Christ’s arrest and subsequent crucifixion.
He is mentioned three times in the New Testament, all in the Gospel of John. He subtly defends Jesus as the Pharisees discuss His impending arrest. Later, he helps prepare Jesus’s body for burial, indicating he had become an adherent to Christ and His teachings.
The first time he is mentioned, however, is in dialogue with Jesus, and these conversations reveal some of the most important aspects of Christian theology, such as the notion of being “born again” and the most famous reference to the divinity of Christ, John 3:16: “For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.”
This detailed conversation explores the divide between the Old Covenant’s dogmatic and exclusive Jewish Law and the New Covenant’s spiritually inclusive concepts. But for a vital contributor to such an important passage of the New Testament, Nicodemus remains a mysterious figure. Some scholars have suggested he may be Nicodemus ben Gurion, a Talmudic figure of wealth and mystical power. Christian tradition suggest he was martyred, and he is venerated as a saint. His name has come to be synonymous with seekers of the truth and is used as a character in many works of biblically inspired fiction.
3 James The Just
He is considered, next to Paul and Peter, the most important apostolic figure in the Church’s history. The Book of Acts specifically names him the head of the Christian church in Jerusalem, and he is frequently cited, both scripturally and apocryphally, as being consulted by both Paul and Peter. So who is he?
Traditionally, he is thought of as Jesus’s brother (or, more precisely, His half-brother). Jesus is listed, in the Gospels, as having siblings, some younger than Him. One was named James.
But James was a common name, and there are several mentioned in the Bible. Two of the 12 disciples were named James, but both are listed as having different fathers than Jesus, and neither went on to become James the Just. James the son of Zebedee went on to be known as James the Great, and James the son of Alphaeus was called James the Less.
It is known that he was a contemporary of Jesus, although he seems to have had no real inner-circle status during Christ’s ministry. The apocryphal Gospel of Thomas says Christ Himself designated James to lead the movement upon His death. The Apostle Paul initially seems respectful, even subservient, to “James the Lord’s brother,” calling him a “pillar” of the movement, even though he was later to disagree with him on matters of doctrine.
Some, though, have suggested the “brother” designation was spiritual, rather than physical. St. Jerome, among others, suggested that the doctrine of perpetual virginity indicated James could be a cousin, which, given the tribal associations and clannishness of the Jewish community of the time, seems valid. Such a relationship would indicate a certain social proximity without necessarily being a true sibling.
2 Simon The Zealot
Of Christ’s 12 disciples, none are more mysterious than Simon the Zealot. His name was meant to differentiate him from Simon Peter and has come to symbolize, for some, that he was a member of a similarly named political movement that advocated Jewish defiance to Roman law. Some have speculated that he acted, within Christ’s inner circle, as a political adviser. His presence then indicated that Jesus had a revolutionary political agenda.
The truth is much less exciting. The “Zealot” movement did not take place until long after the time that Christ would have given Simon his sobriquet, and there has never been any serious evidence that Simon, despite the designation, was a political radical. The name, and the word upon which it is based, did not take on those aggressive undertones until the movement itself was in full swing. More than likely, Simon was given his name because of intense spiritual devotion, rather than any radical political stance.
Nothing else is known of him, at least not with any surety. The Catholic Encyclopedia mentions him as possibly being a brother or cousin of Jesus, with no real evidence. The Eastern Orthodox tradition says he developed his zeal when Jesus attended his wedding and changed water into wine. Some legends say he was martyred; the philosopher Justus Lipsius somehow got it into his head that he was sawed in half.
1 Og
Cited twice specifically, but alluded to frequently in general terms, the Nephilim were a race of violent giants that lived in the pre-Flood world at the same time as humanity. Were they, as some suggest, the offspring of demons and human women? Fallen angels themselves? Or simply the descendants of Seth mentioned in the Dead Sea scrolls, a tribe of cranky cases cursed by God for their rebelliousness? Regardless, they evolved and became known by other names, like the Raphaim, and frequently battled humans for land and power.
The most storied of them was Og, the King of Bashan. He was killed, along with his entire army, and his kingdom was ransacked. All of the survivors—men, women, and children—were put to death, and the strongest and most powerful line of Nephilim descendants was eliminated. Some Nephilim bloodlines continued to do battle with the Israelites, though they were becoming less powerful and dying out. One tribe, the Anakim, allied themselves with the human tribes in Philistia. Goliath was thought to have been one of the last few descendants of the Nephilim.
Goliath’s height is given in the earliest manuscripts as 275 centimeters (9′). That’s hardly as awe-inspiring as the creature laying in Og’s bed, which measured, according to Deuteronomy, 400 centimeters (13′ 6″). That’s basically Yao Ming sitting on Shaquille O’Neal’s shoulders.
Biblically, descendants of the Nephilim could not have survived the Flood, even though Og and other giants are post-Flood figures. Some biblical literalists have attributed their later existence to the descendants of Noah’s family hooking up, once again, with demons. Or, being fallen angels and not human, they did survive the flood.
Jewish tradition gets deeper into information about the Nephilim and their descendants, going against the grain of the biblical account. It tells of Og booking passage on the Ark by promising to act as a slave to Noah and his family. Other accounts have him hanging on to the side of the Ark and riding the flood out rodeo-style.
Excerpt from
news.discovery.com
If you thought Saturn’s ring system was impressive, spare a thought for the rings surrounding the giant exoplanet J1407b — the rings of J1407b wouldn’t only dwarf Saturn’s, the system is so big that it eclipses the massive world’s host star!
J1407b’s ring system was the first of its kind to be discovered outside of the solar system in 2012, but in new research accepted for publication in the Astrophysical Journal, the awesome scale of the rings has been realized. Over 30 individual rings have been observed, each one tens of millions of miles in diameter, and between each concentric ring are gaps that indicate the presence of exomoons — not too dissimilar to Saturn’s ‘shepherd moons’ that continue to shape Saturn’s rings today.
“The star is much too far away to observe the rings directly, but we could make a detailed model based on the rapid brightness variations in the star light passing through the ring system. If we could replace Saturn’s rings with the rings around J1407b, they would be easily visible at night and be many times larger than the full moon.”
Although it has been long theorized that moons can form from the debris surrounding planets, until 2012, astronomers hadn’t found any example of a ringed gas giant beyond our solar system. But now they have a super-sized ring system surrounding a world orbiting another star that provides evidence for a system of exomoons embedded inside a vast ring system.
J1407b’s ring system was the first of its kind to be discovered outside of the solar system in 2012, but in new research accepted for publication in the Astrophysical Journal, the awesome scale of the rings has been realized. Over 30 individual rings have been observed, each one tens of millions of miles in diameter, and between each concentric ring are gaps that indicate the presence of exomoons — not too dissimilar to Saturn’s ‘shepherd moons’ that continue to shape Saturn’s rings today.
“The star is much too far away to observe the rings directly, but we could make a detailed model based on the rapid brightness variations in the star light passing through the ring system. If we could replace Saturn’s rings with the rings around J1407b, they would be easily visible at night and be many times larger than the full moon.”
Although it has been long theorized that moons can form from the debris surrounding planets, until 2012, astronomers hadn’t found any example of a ringed gas giant beyond our solar system. But now they have a super-sized ring system surrounding a world orbiting another star that provides evidence for a system of exomoons embedded inside a vast ring system.
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| The NGTS telescopes operating at ESO Paranal, Chile (Credit: ESO/ G. Lambert) |
Excerpt from space.com
A new alien-planet–hunting telescope has just come online in Chile, and it could help scientists peer into the atmospheres of relatively small planets circling nearby stars.
The Next-Generation Transit Survey (NGTS for short) — located at the European Southern Observatory's (ESO) Paranal Observatory — is designed to seek out planets two to eight times the diameter of Earth as they pass in front of their stars. Such a planet will cause the light of the star to dip ever so slightly when passing in front of it, allowing the telescope to detect the planet during its transit.
"We are excited to begin our search for small planets around nearby stars," Peter Wheatley, an NGTS project lead from the University of Warwick, U.K., said in as statement. "The NGTS discoveries, and follow-up observations by telescopes on the ground and in space, will be important steps in our quest to study the atmospheres and composition of small planets such as the Earth."
A new alien-planet–hunting telescope has just come online in Chile, and it could help scientists peer into the atmospheres of relatively small planets circling nearby stars.
The Next-Generation Transit Survey (NGTS for short) — located at the European Southern Observatory's (ESO) Paranal Observatory — is designed to seek out planets two to eight times the diameter of Earth as they pass in front of their stars. Such a planet will cause the light of the star to dip ever so slightly when passing in front of it, allowing the telescope to detect the planet during its transit.
"We are excited to begin our search for small planets around nearby stars," Peter Wheatley, an NGTS project lead from the University of Warwick, U.K., said in as statement. "The NGTS discoveries, and follow-up observations by telescopes on the ground and in space, will be important steps in our quest to study the atmospheres and composition of small planets such as the Earth."
The instrument is designed to measure the brightness of stars more accurately than any other ground-based wide-field survey, ESO officials said. The NGTS is made up of 12 telescopes that will operate robotically, according to ESO. Astronomers using the survey hope to find small, bright planets in order to learn more about the densities of them.
Excerpt from earthsky.org
Admit it. You’ve probably got a pair of binoculars lying around your house somewhere. They may be perfect – that’s right, perfect – for beginning stargazing. Follow the links below to learn more about the best deal around for people who want to get acquainted with the night sky: a pair of ordinary binoculars.
1. Binoculars are a better place to start than telescopes
2. Start with a small, easy-to-use size
3. First, view the moon with binoculars.
4. Move on to viewing planets with binoculars.
5. Use your binoculars to explore inside our Milky Way.
6. Use your binoculars to peer beyond the Milky Way.
1. Binoculars are a better place to start than telescopes. The fact is that most people who think they want to buy a telescope would be better off using binoculars for a year or so instead. That’s because first-time telescope users often find themselves completely confused – and ultimately put off – by the dual tasks of learning the use a complicated piece of equipment (the ‘scope) while at the same time learning to navigate an unknown realm (the night sky).
Beginning stargazers often find that an ordinary pair of binoculars – available from any discount store – can give them the experience they’re looking for. After all, in astronomy, magnification and light-gathering power let you see more of what’s up there. Even a moderate form of power, like those provided by a pair of 7×50 binoculars, reveals 7 times as much information as the unaided eye can see.
You also need to know where to look. Many people start with a planisphere as they begin their journey making friends with the stars. You can purchase a planisphere at the EarthSky store. Also consider our Astronomy Kit, which has a booklet on what you can see with your binoculars.
2. Start with a small, easy-to-use size. Don’t buy a huge pair of binoculars to start with! Unless you mount them on a tripod, they’ll shake and make your view of the heavens shakey, too. The video above – from ExpertVillage – does a good job summing up what you want. And in case you don’t want to watch the video, the answer is that 7X50 binoculars are optimum for budding astronomers. You can see a lot, and you can hold them steadily enough that jitters don’t spoil your view of the sky. Plus they’re very useful for daylight pursuits, like birdwatching. If 7X50s are too big for you – or if you want binoculars for a child – try 7X35s.
February 24, 2014 moon with earthshine by Greg Diesel Landscape Photography.
You’ll want to start your moon-gazing when the moon is just past new – and visible as a waxing crescent in the western sky after sunset. At such times, you’ll have a beautiful view of earthshine on the moon. This eerie glow on the moon’s darkened portion is really light reflected from Earth onto the moon’s surface. Be sure to turn your binoculars on the moon at these times to enhance the view.
Each month, as the moon goes through its regular phases, you can see the line of sunrise and sunset on the moon progress across the moon’s face. That’s just the line between light and dark on the moon. This line between the day and night sides of the moon is called the terminator line. The best place to look at the moon from Earth – using your binoculars – is along the terminator line. The sun angle is very low in this twilight zone, just as the sun is low in our sky around earthly twilight. So, along the terminator on the moon, lunar features cast long shadows in sharp relief.
You can also look in on the gray blotches on the moon called maria, named when early astronomers thought these lunar features were seas. The maria are not seas, of course, and instead they’re now thought to have formed 3.5 billion years ago when asteroid-sized rocks hit the moon so hard that lava percolated up through cracks in the lunar crust and flooded the impact basins. These lava plains cooled and eventually formed the gray seas we see today.
The white highlands, nestled between the maria, are older terrain pockmarked by thousands of craters that formed over the eons. Some of the larger craters are visible in binoculars. One of them, Tycho, at the six o’clock position on the moon, emanates long swatches of white rays for hundreds of miles over the adjacent highlands. This is material kicked out during the Tycho impact 2.5 million years ago.
Photo of Jupiter’s moons by Earthsky Facebook friend Carl Galloway. Thank you Carl! The four major moons of Jupiter are called Io, Europa, Ganymede and Callisto. This is a telescopic view, but you can glimpse one, two or more moons through your binoculars, too.
4. Move on to viewing planets with binoculars. Here’s the deal about planets. They move around, apart from the fixed stars. They are wanderers, right?
You can use our EarthSky Tonight page to locate planets visible around now. Notice if any planets are mentioned in the calendar on the Tonight page, and if so click on that day’s link. On our Tonight page, we feature planets on days when they’re easily identifiable for some reason – for example, when a planet is near the moon. So our Tonight page calendar can help you come to know the planets, and, as you’re learning to identify them, keep your binoculars very handy. Binoculars will enhance your view of a planet near the moon, for example, or two planets near each other in the twilight sky. They add a lot to the fun!
Below, you’ll find some more simple ideas on how to view planets with your binoculars.
Mercury and Venus. These are both inner planets. They orbit the sun closer than Earth’s orbit. And for that reason, both Mercury and Venus show phases as seen from Earth at certain times in their orbit – a few days before or after the planet passes between the sun and Earth. At such times, turn your binoculars on Mercury or Venus. Good optical quality helps here, but you should be able to see them in a crescent phase. Tip: Venus is so bright that its glare will overwhelm the view. Try looking in twilight instead of true darkness.
Mars. Mars – the Red Planet – really does look red, and using binoculars will intensify the color of this object (or of any colored star). Mars also moves rapidly in front of the stars, and it’s fun to aim your binoculars in its direction when it’s passing near another bright star or planet.
Jupiter. Now on to the real action! Jupiter is a great binocular target, even for beginners. If you are sure to hold your binoculars steadily as you peer at this bright planet, you should see four bright points of light near it. These are the Galilean Satellites – four moons gleaned through one of the first telescopes ever made, by the Italian astronomer Galileo. Note how their relative positions change from night to night as each moon moves around Jupiter in its own orbit.
Saturn.Although a small telescope is needed to see Saturn’s rings, you can use your binoculars to see Saturn’s beautiful golden color. Experienced observers sometimes glimpse Saturn’s largest moon Titan with binoculars. Also, good-quality high-powered binoculars – mounted on a tripod – will show you that Saturn is not round. The rings give it an elliptical shape.
Uranus and Neptune. Some planets are squarely binocular and telescope targets. If you’re armed with a finder chart, two of them, Uranus and Neptune, are easy to spot in binoculars. Uranus might even look greenish, thanks to methane in the planet’s atmosphere. Once a year, Uranus is barely bright enough to glimpse with the unaided eye . . . use binoculars to find it first. Distant Neptune will always look like a star, even though it has an atmosphere practically identical to Uranus.
There are still other denizens of the solar system you can capture through binocs. Look for the occasional comet, which appears as a fuzzy blob of light. Then there are the asteroids – fully 12 of them can be followed with binoculars when they are at their brightest. Because an asteroid looks star-like, the secret to confirming its presence is to sketch a star field through which it’s passing. Do this over subsequent nights; the star that changes position relative to the others is our solar system interloper.
Pleiades star cluster, also known as the Seven Sisters
5. Use your binoculars to explore inside our Milky Way. Binoculars can introduce you to many members of our home galaxy. A good place to start is with star clusters that are close to Earth. They cover a larger area of the sky than other, more distant clusters usually glimpsed through a telescope.
Beginning each autumn and into the spring, look for a tiny dipper-like cluster of stars called the Pleiades. The cluster – sometimes also called the Seven Sisters – is noticeable for being small yet distinctively dipper-like. While most people say they see only six stars here with the unaided eye, binoculars reveal many more stars, plus a dainty chain of stars extending off to one side. The Pleiades star cluster is looks big and distinctive because it’s relatively close – about 400 light years from Earth. This dipper-shaped cluster is a true cluster of stars in space. Its members were born around the same time and are still bound by gravity. These stars are very young, on the order of 20 million years old, in contrast to the roughly five billion years for our sun.
Stars in a cluster all formed from the same gas cloud. You can also see what the Pleiades might have like in a primordial state, by shifting your gaze to the prominent constellation Orion the Hunter. Look for Orion’s sword stars, just below his prominent belt stars. If the night is crisp and clear, and you’re away from urban streetlight glare, unaided eyes will show that the sword isn’t entirely composed of stars. Binoculars show a steady patch of glowing gas where, right at this moment, a star cluster is being born. It’s called the Orion Nebula. A summertime counterpart is the Lagoon Nebula, in Sagittarius the Archer.
With star factories like the Orion Nebula, we aren’t really seeing the young stars themselves. They are buried deep within the nebula, bathing the gas cloud with ultraviolet radiation and making it glow. In a few tens of thousands of years, stellar winds from these young, energetic stars will blow away their gaseous cocoons to reveal a newly minted star cluster.
Scan along the Milky Way to see still more sights that hint at our home galaxy’s complexity. First, there’s the Milky Way glow itself; just a casual glance through binoculars will reveal that it is still more stars we can’t resolve with our eyes . . . hundreds of thousands of them. Periodically, while scanning, you might sweep past what appears to be blob-like, black voids in the stellar sheen. These are dark, non-glowing pockets of gas and dust that we see silhouetted against the stellar backdrop. This is the stuff of future star and solar systems, just waiting around to coalesce into new suns.
Andromeda Galaxy from Chris Levitan Photography.
Many people use the M- or W-shaped constellation Cassiopeia to find the Andromeda Galaxy. See how the star Schedar points to the galaxy?
It’s a whole other galaxy like our own, shining across the vastness of intergalactic space. Light from the Andromeda Galaxy has traveled so far that it’s taken more than 2 million years to reach us.
Two smaller companions visible through binoculars on a dark, transparent night are the Andromeda Galaxy’s version of our Milky Way’s Magellanic Clouds. These small, orbiting, irregularly-shaped galaxies that will eventually be torn apart by their parent galaxy’s gravity.
Such sights, from lunar wastelands to the glow of a nearby island universe, are all within reach of a pair of handheld optics, really small telescopes in their own right: your binoculars.
John Shibley wrote the original draft of this article, years ago, and we’ve been expanding it and updating it ever since. Thanks, John!
Bottom line: For beginning stargazers, there’s no better tool than an ordinary pair of binoculars. This post tells you why, explains what size to get, and gives you a rundown on some of the coolest binoculars sights out there: the moon, the planets, inside the Milky Way, and beyond. Have fun!
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| An artist's conception shows the size of super-Earth 55 Cancri e compared to Earth. A ground-based telescope in Spain was able to identify 55 Cancri e, which suggests that telescopes on the ground help in the search for habitable planets around other stars. |
Excerpt from csmonitor.com
A telescope on the Canary Islands has spotted a planet twice the size of Earth as it passed in front of a star, the first time a planet in this category has been detected by a ground-based telescope.
Finding Earthlike planets beyond our solar system has largely been the work of space-based telescopes, but new observations from a remote island suggest that could change.The Nordic Optical Telescope on La Palma — one of the Canary Islands off the west coast of Africa — observed 55 Cancri e, a planet twice the size of Earth, as it passed in front of its parent star and caused a dip in the star's brightness, according to a new study. This is the first time a planet in this "super-Earth" size category orbiting a sunlike star has been observed by a ground-based telescope using this detection method, the researchers say.
First identified in 2004 by a space-based telescope, 55 Cancri e has a diameter of about 16,000 miles (26,000 kilometers) — about twice that of Earth. The alien world is eight times as massive as Earth, making it a so-called super-Earth, a planet more massive than Earth but significantly smaller than gas giants like Neptune and Uranus. While not habitable, the planet's size and position around a sunlike star make it similar to planets that might support life, researchers say.
"We expect these surveys to find so many nearby terrestrial worlds that space telescopes simply won't be able to follow up on all of them. Future ground-based instrumentation will be key, and this study shows it can be done," Mercedes Lopez-Morales, co-author of the new research and a researcher at the Harvard-Smithsonian Center for Astrophysics (CfA), said in a statement.
Five exoplanets orbit the star 55 Cancri, which is located 40 light-years from Earth and is visible to the naked eye. The closest-orbiting of those five is 55 Cancri e, which completes one lap around the star every 18 hours. When the planet passes between Earth and the parent star, 55 Cancri appears to dim by 1/2000th (or 0.05 percent) for almost 2 hours, researchers said.
Daytime temperatures on 55 Cancri e likely reach higher than 3,100 degrees Fahrenheit (1,700 degrees Celsius) — hot enough to melt metal and much too hot to support life. But scientists involved with the study say this approach could help characterize the atmosphere of more hospitable Earthlike or super-Earth planets.
After its initial detection, 55 Cancri e also became the first super-Earth seen by NASA's Spitzer Space Telescope, using light directly from the planet. Thus, it has now served twice as a litmus test for super-Earth detection methods.
In addition to the wealth of planets identified by NASA's Kepler Space Telescope, the space agency's Transiting Exoplanet Survey Satellite (TESS) mission, scheduled for launch in 2017, is expected to "discover thousands of exoplanets in orbit around the brightest stars in the sky," according to the TESS website. The European Space Agency's Planetary Transits and Oscillations of stars (PLATO) mission, planned for launch in 2024, will also search for a large number of exoplanets.
The exoplanet 55 Cancri e has been observed passing in front of its star for the first time by a ground-based telescope. What do we know about this strange planet?Excerpt from techtimes.comThe exoplanet 55 Cancri e has been seen transiting, or passin...
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A false-color mosaic from space shows the northern seas beneath the haze of Titan. Photograph by NASA/JPL-Caltech/University of Arizona/University of Idaho |
news.nationalgeographic.com
TUCSON, Arizona—Two new "magic islands" have joined one reported last year on Saturn's giant moon Titan, Cassini spacecraft observations showed on Monday. The features add to a puzzling vanishing act playing out on the frozen world's seas.
Since Cassini first arrived at Saturn in 2004, its photos of Titan have revealed numerous seas, lakes, and rivers on the giant moon's frozen surface. This summer, images showed a mysterious feature in one sea—the first "magic island"—that appeared glinting on a lake's surface and then quickly vanished.
The find raised speculation that scientists had captured views of waves splashing within the otherwise mirror-smooth liquid methane seas on the moon. Or else it was a fluke.
Now, an August 21 flyby has turned up two more strange reflecting features, magic islands that weren't there in earlier flybys. "They just popped up," says Cornell's Alexander Hayes, who presented the latest survey of Titan's seas at a briefing at the American Astronomical Society's Division for Planetary Sciences meeting.
"They could be waves, or they could be something more solid," says MIT's Jason Soderblom, a member of the Cassini team reporting the observations. "We definitely know now they are something reflecting from the surface."
Since Titan is the only body besides Earth that has rain-carved geography to study, the possibility of a lake with waves intrigued scientists enough to keep them looking.
"After ten years there, Titan still can surprise us," Hayes says. "Titan has dunes, lakes, seas, even rivers. All this makes Titan an explorer's utopia."
An August 21 flyby passing some 599 miles (964 kilometers) above Titan allowed Cassini to investigate the depth of Kraken Mare, the largest sea on the frozen moon. Radar observations from the spacecraft covered a 120-mile (200-kilometer) shore-to-shore strip of the methane sea.
That flyby revealed that Kraken Mare reaches more than 656 feet (200 meters) deep.
A Cassini flyby of Titan viewed a narrow stretch of the moon's Kraken Mare sea.
Photograph by NASA/JPL-Caltech/ASI/Cornell
Depth Charge
Though Earth and Titan are the only known worlds in the solar system with seas and lakes, the ones on Titan are quite different from Earth's. Surface temperatures on the moon are around -290°F (-179°C), and its lakes are filled with liquid methane, ethane, and other liquefied natural gases.
With spring returning to the northern hemisphere of Titan, where Kraken Mare resides, the scientists suspect they will soon see more mysteries disturbing the once placid surface of the seas of Titan.
"We are likely to see more islands showing up," Hayes says. "These lakes and seas are dynamic places."
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| The Virgin Galactic Two Spaceship |
news.com.au
THE pilot who miraculously survived the Virgin spaceship disaster has revealed how he was blasted from the wreckage of the disintegrating rocket ship and plummeted nearly ten miles back to Earth.
Having suffered serious injuries, the experienced test pilot only regained consciousness halfway into his fall but was composed enough to give a thumbs-up to colleagues in a passing aircraft to show he was alive.
Peter Siebold spoke for the first time about the tragedy that killed his close friend, copilot Mike Alsbury, revealing he blacked out as the craft broke up around him at 50,000ft but was saved by his emergency parachute.
Siebold, 43, a married father of two, said: “I must have lost consciousness at first. I can’t remember anything about what happened but I must have come to during the fall. I remember waving to the chase plane and giving them the thumbs-up to tell them I was OK. I know it’s a miracle I survived.”
Perished ... Mike Alsbury was a close friend and colleague of Peter Siebold. Source: AP
Survivor ... Peter Siebold can’t remember much of what happened that day. Source: AP
Explosion ... These three images show the space craft’s demise. Source: AP
Then disaster occurred. Preliminary investigations suggest that the rocket ship’s folding wings — designed to slow it down and achieve safe speeds during landing — deployed early, causing the ship to break up due to the tremendous turbulence around the craft.
Alsbury was trapped in the cockpit but Siebold was thrown clear of the wreckage or somehow unbuckled his seatbelt. He then plunged towards Earth at speeds topping 193km/h. Witnesses reported seeing Siebold descending with part of the base of his seat still attached. It is likely that his oxygen mask, attached to a portable tank, remained in place. But at that altitude, the sudden decompression and extreme G-forces would have caused him to black out in seconds.
His emergency parachute deployed t about 20,000ft. It is not known if he pulled the cord or if it unfurled automatically. Both pilots were wearing parachutes calibrated to open automatically at a certain height in the event they became unconscious during an emergency.
Incredible ... Siebold has no idea how he managed to exit the space ship, given it has no ejection seat. Source: AFP
The body of Alsbury, 39, was found still strapped into his seat on a desert road by construction workers. His parachute did not deploy. His wife Michelle said she had “lost the love of my life”.
Mike, second from right, was a friend and neighbour of Siebold. Source: Supplied
Big sky dreaming ... Sir Richard Branson vowed to become an astronaut by the end of the year. Source: AP
The investigation into this month’s crash is now likely to delay any commercial flight for at least another year. But Branson has vowed to press ahead with the project, while acknowledging the risks taken by his test pilots. Last night, Mr Whitesides paid tribute to Siebold, saying: “It will be regarded as one of the most amazing test flight survival stories of all time.”
Additional reporting by Peter Sheridan
Excerpt from sciencetimes.com For years, astronomers have pondered the origins and the contents of the mysterious G2 object floating in the center of the Milky Way galaxy. Drifting towards the galaxy's supermassive black hole, the passing ...
Chapter 18 - The Passing Of The Dreamwww.themasterteacher.tv
beforeitsnews.com
By Matthew Butler
People save up for retirement, but how well do we prepare for the journey after? Ancient cultures put great emphasis on the afterlife, because they knew consciousness continued after death. They were right: Out-of-body experiences reveal we really do exist beyond the body. Knowing this truth should inspire us to seek in life what really matters and remains after death – awakened consciousness.
What is the greatest mystery of life? According to a legendary Q&A in the Indian spiritual epic the Mahabharata, the greatest wonder is that countless people die every day, yet those left behind believe they will live forever.
There is a well-known saying that the only certainty in life is death, but our hyper-connected modern society is not exactly inspiring much reflection on what lies beyond the transient.
People put aside savings for retirement, and some take out life insurance to take care of the loved ones they leave behind. This looks after physical needs, but what about the needs of consciousness which continues without the body? What preparations are made for its journey after death – the ultimate journey of a lifetime?
Religious institutions offer a solution to their followers that usually depends on adopting a set of beliefs rather than personal spiritual discovery. On the other hand, some scientists will tell you with equal conviction that nothing comes after death, so don’t worry about it. Both of these points of view depend on belief, but what if, when the final moment comes, you realise you wasted the great opportunity your life provided? An alternative option is to discover for ourselves why we are here, and what our place in the universe is, while we are alive and have the opportunity to do something with the knowledge we gain.
Ancient spiritual cultures almost universally placed importance on the individual’s preparations and journey into the afterlife. They clearly understood our existence extended beyond our bodies, and that life and death were best seen with the bigger picture of creation in mind – as part of an ongoing journey of consciousness – with life presenting an amazing opportunity for conscious evolution that we take the fruits from after death.
This was bought home to me in an interesting way during a trip to a museum exhibition showcasing ancient Egyptian afterlife cosmology; it reminded me of the universal nature of the afterlife, and how Near-Death Experiences and Out-of-Body Experiences offer us a glimpse into the reality of existence beyond the body, revealing that awakening consciousness is what creation is really all about.
With our modern culture drifting more and more into shallow short-sighted materialism and faux metaphysics, the need to re-discover and live this deeper purpose to life, so cherished by the ancients, is more important than ever.
A Journey into the Ancient Egyptian Afterlife
A while back I was fortunate to have the opportunity to take a one-way self-guided tour through the ancient Egyptian afterlife, thanks to a special museum exhibition featuring artefacts from the British Museum collection.
The local museum was packed, and we had to wait in a queue before being allowed in. Finally we entered a dimly-lit passage thronging with people, winding past ancient Egyptian artefacts, artworks, tools, scriptures, and mummies.
The exhibit started with depictions of ancient Egyptian cosmology like this. Here the sky goddess is held up above the earth.There were ancient scrolls of the pyramid texts on display, and ancient art depicting the soul’s journey through the afterlife. A major theme in their art was judgement and the “weighing of the heart”, where a deceased person’s heart was weighed against a feather, and their fate was dependent on their inner qualities and the sum of their actions while alive. Toward the end of the exhibition they had a mockup display of this, with a large set of scales on which you could weigh your “heart” against a feather, while Egyptian Gods looked on from a mural.
After that, you passed into a depiction of the Egyptian paradise before stepping outside into the sunlight. I doubt the effect was intentional on the part of the exhibitors, but after passing through the exhibition’s dark passageway with its ordered depictions of the afterlife, judgment and then stepping into the light, I couldn’t help but think of accounts of near-death experiences, in which people often report passing through a dark tunnel toward the light, and experiencing a life review where they see the consequences of all their actions.
Depiction of the “weighing of the heart”From looking at artefacts from different periods, it was apparent the ancient Egyptian understanding of death changed over time. It seemed to me that originally, the emphasis was on living spiritually and obtaining an immortality of the soul, while in later periods their understanding declined into more literal interpretations of preparing the body (rather than consciousness) for the afterlife through mummification, and a preoccupation with the arrangement of one’s burial and tomb with the right spells and amulets.
But I was vividly struck by how through that civilisation’s long and varied existence, the importance of the afterlife always reigned supreme, and being prepared for life after death was absolutely central to existence. Death, and therefore life, was taken very seriously.
I couldn’t help but notice a stark contrast between our modern culture and theirs. It was a bit like being in some kind of time warp, where two very different cultures collided. The artefacts of the Egyptians gave a sense of the sacredness of life and creation, but the bustling, noisy crowds of modern onlookers apparently saw this ancient preoccupation with the afterlife as mere novelty and amusement. How different ancient Egypt was to our modern society where the reality, and inevitability, of death is given little thought or preparation, and the understanding that consciousness continues after death is often summarily discounted and ridiculed.
I highly doubt that many people who attended the exhibition paused to reflect on whether they would continue to exist after death and, if so, how? And why are we here anyway? This was driven home when, just prior to reaching the scales of “judgement”, I noticed a whiteboard, styled with papyrus veneer, with a pertinent question written at the top.
What would you take with you to the afterlife?
Good question. A pen hung from the board, inviting people to write their response underneath. The answers ranged from the sentimental, to the mundane, to the silly.
How would you answer the question?A “time machine” was perhaps the only clever response. I could see the benefit of that if you realised you had wasted your life. I don’t think it’s really an option however.
This brought home how we don’t take death and the meaning of our lives anywhere near as seriously as we should today. The ancients knew a lot more about life and death than we do. We have lost their ancient wisdom, and with it the understanding of the amazing opportunity our existence in this universe presents.
This is a serious problem. Our consciousness will continue to exist without the body. But if we don’t question our existence and why we are here, we will not awaken consciousness and we will never reach our true potential.
Near-Death Experiences and the Reality of Existence Beyond the Body
Existence after death is not something the ancient Egyptians invented. Concepts of an afterlife are so common across geographically isolated cultures around the world that it cannot simply be dismissed as a coincidence. There may be cultural differences in the details, but the understanding that we continue existing without the body has been pretty much universal for thousands of years.
In fact, the burial of the dead and the realisation of an afterlife are considered some of the most important hallmarks of cultural development in Stone Age people. It was a sign of intelligence distinguishing people from animals, and paved the way for the development of more sophisticated civilisations.
The medieval painting ‘Ascent of the Blessed’ by Hieronymus Bosch shows the light at the end of the tunnel common to NDE accountsThese include an out of body experience, where they leave their body and realise they are separate from it, perhaps seeing their body lying beneath them. Then they may go on a journey, which may feature common aspects like travelling through a tunnel, and a life review, where a person is shown everything they have done, and feels the effects of their actions toward others, whether good or bad.
Although some scientists speculate that these phenomena may be caused by the brain, the reality is that these experiences have occurred when patients are clinically brain dead, and it has not been proven these experiences are produced biologically. Furthermore, there is no ultimate proof that consciousness is produced by the brain anyway, although this is a strongly-held assumption among those entrenched in materialistic beliefs.
NDEs challenge rigid materialistic beliefs about life. In light of the prevalence and commonality of NDEs, some scientists now suggest that consciousness interacts with the brain rather than being produced by it. Rather, the brain is a conduit through which consciousness can express itself, much like the way a computer is a conduit for the internet, but the internet continues to exist when the computer is switched off.
NDEs are increasingly reported in the modern world due to improvements in health care leading to more people being revived, but they are also an ancient phenomenon. Research by the scholar Gregory Shushan found there are universal afterlife experiences which underpinned both modern NDE accounts and ancient afterlife mythologies. His research involved an in-depth comparative analysis of afterlife conceptions of five ancient civilisations (Old and Middle Kingdom Egypt, Sumerian and Old Babylonian Mesopotamia, Vedic India, pre-Buddhist China, and pre-Columbian Mesoamerica) and compared them to modern NDE accounts. He demonstrated that, although there were some variations in the details based on the cultural origin, there were specific recurring similarities that reappeared too consistently to be mere coincidence, suggesting that, “afterlife conceptions are not entirely culturally-determined and… appear to be universal or quasi-universal to some degree”.
Life is an Opportunity to Awaken Consciousness
Realising that you are consciousness, and continue to exist without the body, awakens you to the bigger picture of life. It puts your whole life in perspective.
In an NDE life review, people tend to see that what really matters in life is not how much money they made or what they achieved in a given field, but how they treated other people, and whether they acted with love. These experiences tend to change people’s lives, inspiring them to be more spiritual.
Realising that we exist beyond the body can open the door to awakening. You realise that what really matters in life is not what we gain physically, but developing consciousness. Then the question, “what will you take with you to the afterlife” becomes much more meaningful. You can’t take physical things with you when you die like your iPhone, but you can take consciousness. Then you see that the focus on the afterlife in ancient cultures was not a preoccupation with death, but a deep understanding of life, and how to live it in the most meaningful way to bring spiritual benefits to yourself and others, the effects of which continue after death.
States like anger, greed and hatred have their consequences in the world which are bad enough, but who wants to take these states with them to afterlife? If these states don’t bring happiness here, why drag them along after death? Expressions of consciousness like love, wisdom and inner peace are much better qualities to carry within. By awakening and expressing consciousness in a world filled with ignorance, hatred and darkness, we not only help to make the world a better place, but continue to carry these spiritual qualities in our consciousness when our body is left behind.
Understanding this is so important today. We live in a society bombarded with elite-controlled propaganda and entertainment that not only hides the darker agendas working in the world, but blankets people in ignorance, keeping us from uncovering the deeper potential of our consciousness and empowering ourselves by striving to awaken – which enables us to break free of the grip of darkness that exerts its influence over humanity. Failing to wake up to this agenda has it implications in the world, and also for our consciousness, and it’s consciousness that really counts, both in life and beyond.
So what would you take with you to the afterlife?
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