Tag: stop (page 4 of 16)

As Dawn spacecraft closes in on Ceres, things start to look ‘rough’

January 28, 2015 / / 0 Comments


Ceres: Dawn spies dwarf planet
This image, taken 147,000 miles from Ceres by NASA's Dawn spacecraft, is part of a series of views representing the best look so far at the dwarf planet. The spacecraft is set to enter orbit March 6. (NASA)

Eat your heart out, Hubble! NASA’s Dawn spacecraft is in the home stretch of its journey to Ceres and has snapped the best images yet of the dwarf planet. Grainy as they are, the new views of the 590-mile-wide world are already turning up unexpected features on the surface.
“What we expect at Ceres is to be surprised, so it’s getting off to a good start,” said deputy principal investigator Carol Raymond.
The images, taken 147,000 miles from Ceres on Jan. 25, are 30% higher-resolution than the images taken by NASA’s Hubble Space Telescope in 2003 and 2004. They measure 43 pixels wide, a significant improvement over Dawn’s images from earlier this month, which were 27 pixels across.
The images show significant brightness and darkness variations over the surface – particularly a bright spot gleaming in the northern hemisphere and darker spots in the southern hemisphere. While the scientists were aware of those major spots, they weren’t expecting to see quite so much texture on the surface, said Raymond, a geophysicist at the Jet Propulsion Laboratory.

Ceres is fairly warm by ice-world standards; temperatures generally range from 180 to 240 Kelvin (or minus-136 degrees Fahrenheit to minus-28 degrees Fahrenheit), Raymond said. Theoretically, the ice on Ceres’ surface should start to flow as it warms up, smoothing out any bumps such as those from impact craters. But the brightness variations across the surface make it appear very rough, she said.
“This is just starting to illuminate the fact that Ceres is one of these unique bodies that has astrobiological potential ... and it’s just continued to become more intriguing as we’ve been marching inexorably closer,” she added.

Ceres was not the first stop in Dawn’s 3-billion-mile journey. The first was the protoplanet Vesta, which is vastly different from its fellow mega-asteroid, Ceres. Where Vesta is dry and lumpy, Ceres is icy and round, massive enough to have been pulled into a planet-like shape. Scientists want to find out why these two space-fossils from the early solar system ended up with such different geophysical life stories.
At least with Vesta, there were meteorites linked to the asteroid that planetary scientists can study, Raymond pointed out. For Ceres, there are no such space rocks found on Earth – so the researchers have somewhat less of an idea of what to expect.

“I am excited,” Raymond said. “Just having had the wild ride at Vesta, I’m also just in awe of what’s going to happen. It’s going to be amazing.”

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The Mystery of the Ghost Ship Lunatic

January 27, 2015 / / 0 Comments

The Lunatic Piran found abandoned Jure Stwerk at the Helm           ...

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With innovators from around the globe digging in, public moon travel may be only 20 years away

January 26, 2015 / / 0 Comments



moon
Image Credit: hkeita/Shutterstock


Excerpt from  venturebeat.com
By Vivek Wadhwa

Five teams competing for the $30 million Google Lunar XPRIZE have just been awarded a combined $5.25 million for meeting significant milestones in developing a robot that can safely land on the surface of the moon, travel 500 meters over the lunar surface, and send mooncasts back to the Earth. A tiny startup from India, Team Indus, with no experience in robotics or space flight just won $1 million of this prize. It stood head to head with companies that had been funded by billionaires, had received the assistance of NASA, and had the support of leading universities.
The good news is that governments no longer have a monopoly on space exploration. In two or three decades, we will have entrepreneurs taking us on private spaceflights to the moon. That is what has become possible.

What has changed since the days of the Apollo moon landings is that the cost of building technologies has dropped exponentially. What cost billions of dollars then costs millions now, and sometimes even less. Our smartphones have computers that are more powerful than the Cray supercomputers of yesteryear — which had strict export controls and cost tens of millions of dollars. We carry high-definition cameras in our pockets that are more powerful than those on NASA spacecraft. The cameras in the Mars Curiosity Rover, for example, have a resolution of 2 megapixels with 8GB of flash memory, the same as our clunky first-generation iPhones. The Apollo Guidance Computer, which took humans to the moon in 1966, had a 2.048 MHz processor — slower than those you find in calculators and musical greeting cards.

The same technologies as are available in the United States and Europe are available worldwide. Innovation has globalized.
I met Team Indus while I was in Mumbai to speak at INK last November. When they told me they were competing for the Google Lunar XPRIZE. I didn’t take them seriously because I had seen their counterpart in Silicon Valley, Moon Express, which has the support of tech moguls such as Naveen Jain. How could a scrawny little startup in Bangalore take on Naveen Jain, former NASA engineer Bob Richards, and NASA itself, I thought. The Moon Express team is a force of nature, has the advantage of being on the NASA Ames Research campus, and has been given R&D worth billions of dollars by NASA.

Team Indus was also up against Astrobotic, which is a spinoff from the Carnegie Mellon University Robotics Institute, and Israel-based SpaceIL, which has the backing of the country’s top research institutes.

The company’s win blew my mind. Even though the subject of my INK talk was how Indian entrepreneurs could help change the world, I didn’t think it was already happening.

(See my Jan. 1 story on the Indian tech scene and watch this talk to learn more: Why India shouldn’t be succeeding but is.)

The Bangalore-based startup was founded by former I.T. executive Rahul Narayan and four of his friends: an Air Force pilot, a marketing executive, an investment banker, and an aerospace engineer. None of the team had experience in building spacecraft or robots, yet they were able to build technology that could navigate to the moon.

Narayan says he expects completion of his space mission to cost around $30 million. Moon Express chief executive Bob Richards estimates $50 million. These numbers are higher than the $20 million prize that they hope to win. But both see far greater opportunities: They hope to be pioneers in what could be a trillion-dollar industry. Richards is looking to mine the moon for minerals and bring them back to Earth. Each payload could be worth billions.

The Google Lunar XPRIZE has 26 teams competing from around the world. Collectively, they will spend in the hundreds of millions of dollars on their efforts. For them, it is not all about winning the contest; many of the losers will still commercialize their space technologies or put their knowledge to use in other fields. This is the power of such competitions. They lead entrants to spend multiples of the offered purse on innovative solutions. And they motivate people outside the industry, such as Narayan, to enter it with out-of-the-box thinking.

Innovation prizes are not new. In fact, a number of celebrated historical feats were made possible, in part, by the desire to win these prizes. In the 1920s, New York hotel owner Raymond Orteig offered a $25,000 prize to the first person to fly non-stop between New York and Paris. Several unsuccessful attempts were made before an American airmail pilot named Charles Lindbergh won the competition in 1927 with his plane, The Spirit of St. Louis. 
Lindbergh’s achievement made him a national hero and a global celebrity. And it sparked the interest and investment that led to the modern aviation industry.

That is what I expect will come of the Lunar XPRIZE. And that is why I am looking forward to booking my round-trip ticket to the moon one summer in the 2030s.

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California breaks ground on bullet train project despite opposition, as price tag soars

January 7, 2015 / / 0 Comments





Excerpt from foxnews.com

Despite cost overruns, lawsuits, public opposition and a projected completion date 13 years behind schedule, California Gov. Jerry Brown broke ground Tuesday on what is to become the most expensive public works project in U.S. history: the California bullet train. 

Over the next 1,000 days, California is estimated to spend roughly $4 million a day on the project. 

The high-speed train, set to be finished in 2033, originally was supposed to deliver passengers from San Francisco to Los Angeles in two hours and 40 minutes. That was the promise when voters narrowly approved $10 billion in bonds for the project in 2008. Since then, however, the estimated trip time has grown considerably, and the train has encountered persistent problems -- as experts uncovered misrepresentations in the ballot proposition, and opponents sued to stop the project on environmental and fiscal grounds. 

"We're talking about real money here," said Kris Vosburgh, executive director of taxpayer watchdog group Howard Jarvis Taxpayers Association. "This is money that's not available for health care or education, for public safety, or put back in taxpayers' pockets so they have something to spend. This is money being drawn out of the system for a program that is going to serve very few people." 

Much about the project has changed since it was sold to the public. 
Voters were told the project would cost just $33 billion. Once experts crunched the numbers, however, the price tag soared to $98 billion. It was supposed to whoosh riders from Southern California to the Bay Area in less than three hours, but now it’s more than four hours due to changing track configurations and route adjustments. The train was supposed to get people off the freeway and reduce carbon emissions, but a panel of experts now says any carbon savings will be nominal. (A drive by car takes just over 6 hours. Ed.) 

Further, ridership projections have been cut by two-thirds from a projected 90 million to 30 million a year. Fewer riders means higher prices. According to a panel of transportation experts hired by the Reason Foundation, Citizens Against Government Waste and the Howard Jarvis Taxpayers Association, tickets will exceed $80 -- not $50 -- and the system will require annual subsidies of more than $300 million annually. 

"The public has turned sour on this plan but the governor, to paraphrase Admiral Farragut, has taken a position of 'damn the people, full speed ahead'," Vosburgh said. 

Undaunted by critics, Brown broke ground in Fresno on Tuesday on the first 29-mile segment of the train's system. Under Brown's direction, the California High Speed Rail Authority has gone to court to seek an exemption from an environmental quality law the state imposes on other projects but not this one. Brown also convinced the state Legislature to dedicate an annual revenue stream from the state's carbon tax, to help pay for the bullet train. 
"It's a long project, a bold project and one that will transform the Central Valley," Brown said Monday as he began his fourth and final term as governor. 

Once construction begins, supporters say it will be harder to stop the project. Several lawsuits linger, but a bigger question concerns the money: Where will it come from? If every penny committed to the project is added up, the project is still more than $30 billion short. Republicans in Congress are vowing not to commit a dollar more than President Obama approved in 2012. 

"For years now, Governor Brown and the high-speed rail authority have turned the idea of high-speed rail into a public albatross far beyond what Californians envisioned or voted for," House Majority Leader Kevin McCarthy, R-Calif., said in a statement released Tuesday. "Sadly, today's groundbreaking is a political maneuver. Supporters of the railroad in Sacramento can't admit their project is deeply flawed, and they won't give up on it despite the cost. But these political tricks are exactly what the American people are tired of and what the new Republican Congress is committed to ending." 

Supporters don't see waste. They argue the project will reduce freeway gridlock, offer competition to air travel and provide an alternative to trucking freight. 

Environmentalists also have opposed the project, suing and claiming the construction project would harm 11 endangered species and worsen air quality in the already dirty Central Valley. They lost when a federal judge ruled the project did not have to adhere to the state Environmental Quality Act, unlike other projects. Additional legal challenges remain, but supporters believe once the train leaves the station and ground is broken, there's no going back. 

"The legacy of the Brown family is that they have been big thinkers, but also big builders," said Democratic state Assemblyman Henry Perea. "I think this is an opportunity for the legislature to step up, support Governor Brown. "

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Get ready! NASA spacecraft soon to rendezvous with dwarf planet Ceres

January 1, 2015 / / 0 Comments




Excerpt from latimes.com

After voyaging 2.4 billion miles through space, NASA’s Dawn spacecraft is finally in the home stretch of its journey to Ceres, the largest member of the asteroid belt and one of five dwarf planets in the solar system.
Dawn was launched in 2007 to study two very different asteroids and learn more about the building blocks of our solar system. Ceres is Dawn’s second stop; its first was Vesta, which the spacecraft circled from July 2011 to September 2012.

Now, after leaving Vesta and traveling through space for more than two years, the spacecraft is roughly 400,000 miles away from Ceres and speeding toward it at about 450 mph, with a rendezvous set for March 6.
Ceres is a dwarf planet, along with Haumea, Makemake, Pluto and Eris (whose discovery led to Pluto’s infamous planetary demotion). At 590 miles across and holding roughly a third of the mass of the asteroid belt, Ceres is large enough that its own gravity pulls it into a spherical shape – which is part of why it was once considered to be very planet-like. In fact, Ceres was listed as a planet for decades after its discovery in 1801, and was briefly reconsidered during the 2006 debate surrounding Pluto’s planetary status.
Ceres is the only dwarf planet in the inner solar system. Although it’s much larger than Vesta, it’s more of a mystery. Scientists have meteorites that they believe are from Vesta, which they can study and compare to Dawn’s observations of the asteroid; but no such fragments found on Earth have been linked to Ceres. Until now, fuzzy images taken by NASA’s Hubble Space Telescope have provided our best view of the icy dwarf planet. But that should change by the end of January, as Dawn approaches its target.


Why are these two "protoplanets" so different? Scientists think Vesta formed earlier, when radioactive material was more abundant and produced more heat, leaving the asteroid very dry. Ceres may have formed later. Some researchers also think that Ceres may have originated much farther out in the solar system, before being yanked into its current position during a dramatic upheaval earlier in the solar system’s development.

As building blocks of our solar system that never became full planets, these protoplanets’ divergent life stories could shed light on the early solar system’s history.


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Top 6 tips for using ordinary binoculars for stargazing

January 1, 2015 / / 0 Comments




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.
February 24, 2014 moon with earthshine by Greg Diesel Landscape Photography.

3. First, view the moon with binoculars. When you start to stargaze, you’ll want to watch the phase of the moon carefully. If you want to see deep-sky objects inside our Milky Way galaxy – or outside the galaxy – you’ll want to avoid the moon. But the moon itself is a perfect target for beginning astronomers, armed with binoculars. Hint: the best time to observe the moon is in twilight. Then the glare of the moon is not so great, and you’ll see more detail.

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.

View Larger. Photo of Jupiter's moons by Carl Galloway. Thank you Carl! The four major moons of Jupiter - Io, Europa, Ganymede and Callisto - are easily seen through a low-powered telescope. Click here for a chart of Jupiter's moons
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.

Milky Way Galaxy arching over a Joshua tree

Pleiades star cluster, also known as the Seven Sisters
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.
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? Click here to expand image.
Many people use the M- or W-shaped constellation Cassiopeia to find the Andromeda Galaxy. See how the star Schedar points to the galaxy?


6. Use your binoculars to view beyond the Milky Way.  Let’s leap out of our galaxy for the final stop in our binocular tour. Throughout fall and winter, she reigns high in the sky during northern hemisphere autumns and winters: Andromeda the Maiden. Centered in the star pattern is an oval patch of light, readily visible to the unaided eye away from urban lights. Binoculars will show it even better.

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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Is AI a threat to humanity?

December 30, 2014 / / 0 Comments

Excerpt from cnn.comImagine you're the kind of person who worries about a future when robots become smart enough to threaten the very existence of the human race. For years, you've been dismissed as a crackpot, consigned to the same category of peop...

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What if our reality were a computer simulation? Can we hack into the program of existence?

November 30, 2014 / / 0 Comments

 What if our reality were a computer simulation? Once we discover that, can we hack into the programme of existence? Can we stop ourselves from being shut down? Edeline discusses the possibility of our reality being nothing more than coded info...

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Comet lander: Camera sees Philae’s hairy landing

November 18, 2014 / / 0 Comments

This collection of images was acquired when Rosetta was about 15km above the surface of 67P  Excerpt from bbc.com By Jonathan Amos Science correspondent, BBC NewsHigh-resolution pictures have now been released of the Philae pr...

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Are we sending aliens the right messages?

November 12, 2014 / / 0 Comments


(Nasa)


bbc.com

Artist Carrie Paterson has long dreamed of beaming messages far out to the emptiness of space. Except her messages would have an extra dimension – smell.

By broadcasting formulae of aromatic chemicals, she says, aliens could reconstruct all sorts of whiffs that help to define life on Earth: animal blood and faeces, sweet floral and citrus scents or benzene to show our global dependence on the car. This way intelligent life forms on distant planets who may not see or hear as we do, says Paterson, could explore us through smell, one of the most primitive and ubiquitous senses of all.
(Wikipedia)
It is nearly 40 years since the Arecibo facility sent messages out into space (Wikipedia)

Her idea is only the latest in a list of attempts to hail intelligent life outside of the Solar System. Forty years ago this month, the Arecibo radio telescope in Puerto Rico sent an iconic picture message into space – and we’ve arguably been broadcasting to aliens ever since we invented TV and radio.

However in recent years, astronomers, artists, linguists and anthropologists have been converging on the idea that creating comprehensible messages for aliens is much harder than it seems. This week, Paterson and others discussed the difficulties of talking to our cosmic neighbours at a conference called Communicating Across the Cosmos, held by Seti (Search for Extraterrestrial Intelligence). It seems our traditional ways of communicating through pictures and language may well be unintelligible – or worse, be catastrophically misconstrued. So how should we be talking to ET?

Lost in translation?

We have always wanted to send messages about humanity beyond the planet. According to Albert Harrison, a space psychologist and author of Starstruck: Cosmic Visions in Science, Religion and Folklore, the first serious designs for contacting alien life appeared two centuries ago, though they never got off the ground.

In the 1800s, mathematician Carl Gauss proposed cutting down lines of trees in a densely forested area and replanting the strips with wheat or rye, Harrison wrote in his book. “The contrasting colours would form a giant triangle and three squares known as a Pythagoras figure which could be seen from the Moon or even Mars.” Not long after, the astronomer Joseph von Littrow proposed creating huge water-filled channels topped with kerosene. “Igniting them at night showed geometric patterns such as triangles that Martians would interpret as a sign of intelligence, not nature.”

But in the 20th Century, we began to broadcast in earnest. The message sent by Arecibo hoped to make first contact on its 21,000 year journey to the edge of the Milky Way. The sketches it contained, made from just 1,679 digital bits, look cute to us today, very much of the ‘Pong’ video game generation.  Just before then, Nasa’s Pioneer 10 and 11 space probes each carried a metal calling card bolted onto their frame with symbols and drawings on the plaque, showing a naked man and woman.

Yet it’s possible that these kinds of message may turn out to be incomprehensible to aliens; they might find it as cryptic as we find Stone Age etchings.

Antique tech

“Linear drawings of a male and a female homo sapiens are legible to contemporary humans,” says Marek Kultys, a London-based science communications designer. ”But the interceptors of Pioneer 10 could well assume we are made of several separate body parts (i.e. faces, hair and the man’s chest drawn as a separate closed shapes) and our body surface is home for long worm-like beings (the single lines defining knees, abdomens or collarbones.).”

Man-made tech may also be an issue. The most basic requirement for understanding Voyager’s Golden Record, launched 35 years ago and now way out beyond Pluto, is a record player. Aliens able to play it at 16 and 2/3 revolutions a minute will hear audio greetings in 55 world languages, including a message of ‘Peace and Friendship’ from former United Nations Secretary General Kurt Waldheim. But how many Earthlings today have record players, let alone extraterrestrials?
(Nasa)
Our sights and sounds of Earth might be unintelligible to an alien audience (Nasa)



Time capsule

Inevitably such messages become outdated too, like time capsules. Consider the case of the Oglethorpe Atlanta Crypt of Civilization – a time capsule sealed on Earth in 1940, complete with a dry martini and a poster of Gone With the Wind. It was intended as a snapshot of 20th Century life for future humans, not aliens, but like an intergalactic message, may only give a limited picture to future generations. When, in 61,000 years, the Oglethorpe time capsule is opened, would Gone With The Wind have stood the test of time?

(Nasa)
This message was taken into the stars by Pioneer - but we have no idea if aliens would be able to understand it (Nasa)

Kultys argues that all these factors should be taken into account when we calculate the likelihood of communicating with intelligent life. The astronomer Frank Drake’s famous equation allows anyone to calculate how many alien species are, based on likely values of seven different factors. At a UK Royal Society meeting in 2010 Drake estimated there are roughly 10,000 detectable civilisations in the galaxy. Yet Kultys points out that we should also factor in how many aliens are using the same channel of communications as us, are as willing to contact us as we are them, whose language we hope to learn, and who are physically similar to us.

Another barrier we might consider is the long distance nature of trans-cosmos communication. It means that many years ‒ even a thousand ‒ could pass between sending a message and receiving a reply. Paterson sees romance in that. “Our hope for communication with another intelligent civilisation has a melancholic aspect to it. 
We are on an island in a vast, dark space. Imagine if communication… became like an exchange of perfumed love letters with the quiet agony of expectation... Will we meet? Will we be as the other imagined? Will the other be able to understand us?”

Ready for an answer?

Anthropologist John Traphagan of the University of Texas in Austin has been asking the same question, though his view is more cautious. "When it comes to ET, you'll get a signal of some kind; not much information and very long periods between ‘Hi, how are you?’ and whatever comes back. We may just shrug our shoulders and say 'This is boring’, and soon forget about it or, if the time lag wasn't too long, we might use the minimal information we get from our slow-speed conversation to invent what we think they're like and invent a kind concept of what they're after.”
(20th Century Fox)
The aliens in Independence Day (1996) did not come in peace (20th Century Fox)
While we have been sending out messages, we have not been preparing the planet for what happens when we get an interstellar return call. First contact could cause global panic. We might assume those answering are bent on galactic domination or, perhaps less likely, that they are peaceful when in fact they’re nasty.

Consider how easy it is to mess up human-to-human communications; I got Traphagan’s first name wrong when I e-mailed him for this article. An apology within minutes cleared up the confusion, yet if he had been an alien anthropologist on some distant planet it would have taken much longer to fix. He later confessed: "I could have thought this is a snooty English journalist and our conversation might never have happened."

Even if Earth’s interstellar messaging committees weeded out the typos, cultural gaffes are always a possibility. These can only be avoided by understanding the alien’s culture – something that’s not easy to do, especially when you’ve never met those you’re communicating with.

Rosy picture

So, what is the best way to communicate? This is still up for grabs – perhaps it’s via smell, or some other technique we haven’t discovered yet. Clearly, creating a message that is timeless, free of cultural bias and universally comprehensible would be no mean feat.

But for starters, being honest about who we are is important if we want to have an extra-terrestrial dialogue lasting centuries, says Douglas Vakoch, director of interstellar message composition at Seti. (Otherwise, intelligent civilisations who’ve decoded our radio and TV signals might smell a rat.)

(Nasa)
The golden discs aboard the Voyager spacecraft require aliens to understand how to play a record (Nasa)

“Let's not try to hide our shortcomings,” says Vakoch. “The message we should send to another world is straightforward: We are a young civilisation, in the throes of our technological adolescence. We're facing a lot of problems here on Earth, and we're not even sure that we'll be around as a species when their reply comes in. But in spite of all of these challenges, we humans also have hope – especially hope in ourselves."


Yet ultimately what matters, says Paterson, is that they stop and consider the beings who sent them a message; the people who wanted to say: “Here are some important things. Here’s our DNA, here is some maths and universal physics. And here is our longing and desire to say “I’m like you, but I’m different.”

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First legal pot, now Colorado launches new voting experiment

November 1, 2014 / / 0 Comments




Excerpt from nypost.com

As Colorado goes Election Night, so goes the nation — maybe.
The Centennial State is clearly a barometer of President Obama’s falling popularity. 

The man who began his meteoric rise as the Democratic presidential nominee in Denver’s stadium in 2008 has lost much of his luster with Colorado voters and appears to be bringing down other Democrats with him. 

Polls show Republican Cory Gardner ahead by seven points in his race to unseat incumbent Democratic Sen. Mark Udall, and GOP gubernatorial candidate Bob Beauprez is neck and neck with sitting Gov. John HIckenlooper. 

But before Republicans pop the champagne corks, it’s worth considering the big wild card in this election.

Like the rest of Colorado’s roughly 3 million registered voters, I received my ballot in the mail about two weeks ago. This year will be the first that all Colorado voters received mail ballots, even without requesting them. 

The potential for thousands more voters to cast ballots in what is usually a low-turnout midterm election could easily confound pollsters and politicos. 

Conventional wisdom is that higher turnout favors Democrats — and the odds of higher turnout helping Dems in Colorado seem somewhat greater, given the demographics of the state.
Some 14 percent of eligible voters in Colorado are Hispanic. Obama improved his share of support among Colorado Hispanic voters from 61 percent in 2008 to 75 percent in 2012. 

If mail ballots boost Hispanic voter participation by a few percentage points this year, it will likely redound to Democrats’ benefit. In a race as tight as the Colorado governor’s race, Hispanic voters could well determine the outcome.

But demographics don’t give the full picture. Since 2008, Democrats have benefited from a much stronger ground game that put operatives in the field to turn out their likely voters. 

The effort wasn’t enough to stop populist Tea Party voters from boosting GOP fortunes in the 2010
congressional races, but Colorado was the exception. Democrat Michael Bennet won an open Senate race with just 30,000 more votes than his Republican opponent, Ken Buck. 

The question in 2014 is whether mail balloting helps or erases the Democrats’ edge.

A New York Times analysis of Colorado mail ballots that had already been tallied 10 days out from the election seemed to give Republicans an advantage. Registered Republicans had mailed in ballots in higher numbers than Democrats, 42.8 percent to 32.3 percent. 

But those trends may not continue. It could be that more Republicans simply cast their ballots early, which is where the Democratic ground game will come in handy. 

Early voting makes it easier for “volunteers” — many of them paid political and union operatives — to go door to door to urge those who haven’t voted to do so.


Who is to stop “volunteers” from showing up with dozens of mail ballots collected from elderly voters or others who may have been pressured by union reps or family members to cast their votes?
Colorado will have regulations in place to limit the number of ballots a single individual can drop off at collection centers after 2015, but this year the possibility of ballot stuffing is real.

State election officials claim that the signature on the ballot envelope is their way to detect phony ballots. But the system hardly seems foolproof, requiring signatures to be scanned and matched against a database that may prove more cumbersome than anticipated.

Nov. 4 will be a test for Colorado — and for the nation — on this new experiment in democracy.

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Erie Paris Catacombs Open at Night Ahead of Halloween

October 15, 2014 / / 0 Comments

rewrwer345252.jpg
Skulls and bones are stacked at the Catacombs in Paris, France. The subterranean tunnels, stretching over a mile, cradle the bones of some 6 million Parisians from centuries past and once gave refuge to smugglers. (AP Photo)


foxnews.com

As if visiting the Paris Catacombs in the daytime wasn't creepy enough — you can now visit the underground maze of skeletons after nightfall, too. That is if you dare defy the warning at the entrance: "Stop, this is the empire of Death."
The subterranean tunnels, stretching 2 kilometers (1.2 miles), cradle the bones of some 6 million Parisians from centuries past and once gave refuge to smugglers.
Twenty meters (66 feet) beneath the French capital's medieval streets, labyrinthine walls of bones and skulls bring visitors into the city of the dead, in a spooky atmosphere that attracts history enthusiasts as well as visitors looking for a chilling place to celebrate Halloween.
The site used to close at 5 p.m., but is now staying open until 8 p.m. The change is mainly aimed at allowing more people to visit and reducing long lines, but it also adds to the thrill: entering and leaving the catacombs after dark feels different from doing it in daylight.
Human remains started to be transferred to the former underground quarries of Paris in 1786, when the main cemetery of Paris —the Cemetery of Innocents — was closed for public health reasons. From 1809 on, the catacombs were rearranged into organized galleries, with piled bones forming walls and pillars, and even some artistic shapes made of femurs and skulls.
Sacred and profane maxims and poems are posted around the galleries, such as: "Think in the morning that perhaps you won't survive until evening, and in the evening that perhaps you won't survive until morning."
Valerie Guillaume, director of the Catacombs, stressed the philosophical nature of the unusual tourist site.
"The place was not conceived to be a horror place, but as a reflection on the meaning of life and death," she said.
Sylvie Robin, the Catacombs' curator, described the extensive smuggling that went on in the tunnels in the past and contributed to its scary reputation.
"That's the origin of all the legends," she said, because the smugglers used to scare the Parisians with lights and noises, so that no one would come and see what they were doing.
———
Open from 10 a.m. to 8 p.m. (last admission at 7 p.m.), closed on Mondays and public holidays. General admission: 10 euros (about $12.70). Tour of 2 kilometers (1.2 miles) takes around 45 minutes, with 130 steps to go down and 83 steps back up to street level. Not accessible to people with reduced mobility.

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Throw Out the Geology Books – Volcanic Activity Demands a Rethink of Moon

October 14, 2014 / / 0 Comments




Excerpt from forbes.com
By Brid-Aine Parnell



Space geologists will have to rewrite the textbooks on the Moon after the latest Lunar Reconnaissance Orbiter data, which shows that there have been volcanoes on our rocky satellite a lot more recently than we thought.

NASA’s LRO satellite has spotted strong evidence that the Moon’s volcanic activity slowed down gradually instead of coming to an abrupt stop a billion years ago – which also means the interior is probably not the temperature scientists thought it was.

Some of the distinctive rock deposit evidence seen by LRO could be as young as a hundred million years, right around the time of the dinosaurs on Earth. Others could be even younger, just 50 million years old.

“This finding is the kind of science that is literally going to make geologists rewrite the textbooks about the moon,” said John Keller, LRO project scientist at NASA’s Goddard Space Flight Centre, in a statement.


LRO spots volcanic activity rock deposits on the Moon

So many of these rocky deposits strongly suggests that the last spate of volcanoes on the Moon weren’t sporadic flukes, but important parts of the Moon’s geological history.


If there was widespread volcanic activity still going on just a few tens of millions of years ago, that also means that the temperature of the Moon’s interior is probably very different to previous estimates.

“The existence and age of the irregular mare patches tell us that the lunar mantle had to remain hot enough to provide magma for the small-volume eruptions that created these unusual young features,” said Sarah Braden, a recent Arizona State University graduate and the lead author of the study.

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