Tag: Thursday (page 3 of 7)

Star Disappears in a Warp In Space-Time


Time warp created by a pulsar



Excerpt from popsci.com

A star has slipped out of view thanks to the space-time warp it creates as it orbits.

The disappearing star is part of a binary star system called J1906. It's a pulsar, which means it's a rotating neutron star, the result of a massive star collapsing in on itself. Researchers have been studying the young pulsar for five years to determine what kind of companion star was orbiting around it. That is, until recently, when the pulsar vanished.

As a pulsar rotates, it emits a beam of electromagnetic radiation, sort of like light coming from a lighthouse. Scientists use radio telescopes that pick up on the pulses coming from the star. But as scientists watched J1906, the pulsar began to slip off the radar. It seems that as the pulsar spins around its companion star, the mass of the companion star makes it sink into a dip in space-time, so that its radio waves can no longer reach Earth. The concept is called geodetic precession, which, according to NASA, uses Einstein’s theory of relativity to understand how massive objects like the Earth curve the space around them, influencing the local space-time fabric.  

The video above illustrates the sinkhole in space created by the pulsar as it orbits the second star. As the warp increases, the pulsar's axis shifts (demonstrated by the arrows), so its radio pulses no longer aim toward Earth's radio telescopes.

But the pulsar won’t be out of sight for forever. Lead scientist Joeri van Leewuen from the Netherlands Institute for Radio Astronomy estimates the star will come back into sight in less than 160 years.

The team’s findings were released Thursday in the Astrophysical Journal in conjunction with the American Astronomical Society’s 225th meeting.

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1795 time capsule found in Boston capitol


1795 TIME CAPSULE



Excerpt from
usatoday.com 

A time capsule buried in 1795 by Paul Revere and Samuel Adams was unearthed Thursday in Boston at the Massachusetts Statehouse, possibly the oldest such U.S. artifact ever uncovered.

About the size of a cigar box, the copper container — green from oxidation and caked in plaster — was found in the cornerstone of the "new" statehouse on Beacon Hill, which was completed in 1798.

As Boston Museum of Fine Arts Conservator Pam Hatchfield chiseled away for hours to free the box, five silver coins spilled from the stone block — measures of good luck tossed in when the capsule was entombed by the revolutionary heroes 219 years ago, officials told the Boston Globe. At the time, Adams was known as the governor, not a beer.

The world will have to wait a little longer to learn what's inside. The museum will X-ray the box over the weekend and reveal its contents next week.

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Stem Cell Success Raises Hopes of Type 1 Diabetes Cure

In laboratory, researchers have developed insulin-producing beta cellsExcerpt fromnlm.nih.gov THURSDAY, Oct. 9, 2014 (HealthDay News) -- In what may be a step toward a cure for type 1 diabetes, researchers say they've developed a large-scale met...

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Pittsburg Company To Take Mementos To Moon





pittsburgh.cbslocal.com

Astrobotic Technology Inc. announced the launch of their Moon Mail program, which will send a small memento to the moon for you on its Griffin lunar lander.

“For the first time ever, people from all over the world can take their keepsakes, mementos, and fly them all the way directly to the moon,” John Thornton told KDKA money editor Jon Delano on Thursday.

The company was found in 2008 and is a licensed contractor with NASA. They are also an official partner with NASA on the Lunar CATALYST program.

According to a press release, the program is, “an opportunity to commemorate major life events – graduations, weddings, birthdays, a loved one’s memory – with a lasting symbol on the moon.”
“With Moon Mail, people from around the world can send a memento on Astrobotic’s lunar lander,” Astrobotic CEO John Thornton said in a statement. “They’ll make history by participating in the first commercial Moon landing.”

“We’re a delivery service. We’re just like FedEx or UPS. We take your packages and send them to the moon,” Thornton said.
Looking for a cool Christmas gift for a loved one?
Thornton says, send a memory of them to the moon.

“The moon is a forever place. It’s up in the sky and you can see it every single night, so we can send pieces of ourselves, stories, and mementos that mean something to us as individuals, and it will be forever immortalized on the surface of the moon.”

In about two years, Astrobotic will launch its first space craft to the moon as part of Google’s Lunar X-Prize Contest — and then land on the surface.

The lunar lander looks pretty typical, and mail will be strapped or attached right to the surface of the lander. The lander ends up on the moon where it stays forever along with your package.

It’s not cheap.

Depending on the size of your package, the price ranges from $460 to over $25,000.

“Wouldn’t interest me in the least,” says Carolyn Roberts of Murraysville.

“I want to keep everything here. Give it to the kids,” adds Daneen Miller of Murraysville.

While some have no interest, others see the possibilities.
“It would be pretty cool to say you had a piece of yourself on the moon,” notes R. J. Baughman of Robinson.

“Something that means a lot to me I guess,” says Nikki Boyle of Castle Shannon. “That way if I look up at the moon, I know it’s there.

A pretty cool thought indeed.

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Biggest-Ever Telescope Approved for Construction

Sure to produce images far more inspiring than its name, the European Extremely Large Telescope, or E-ELT. (Artist's rendereing)Excerpt from space.com The world's largest telescope has gotten its official construction go-ahead, keeping the enormous in...

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Invisible shield in space protects Earth from ‘killer electrons’


A cloud of cold, charged gas around Earth, called the plasmasphere and seen here in purple, interacts with the particles in Earth's radiation belts — shown in grey— to create an impenetrable barrier that blocks the fastest electrons from moving in closer to our planet. Image by NASA/Goddard
A cloud of cold, charged gas around Earth, called the plasmasphere and seen here in purple, interacts with the particles in Earth’s radiation belts — shown in grey— to create an impenetrable barrier that blocks the fastest electrons from moving in closer to our planet. These findings were published in Nature magazine on Nov. 26, 2014. Image by NASA/Goddard



Excerpt from pbs.org

A team led by professors and scientists from the University of Colorado at Boulder have discovered an invisible shield in space that blocks Earth from so-called “killer electrons,” according to findings published in Nature on Thursday.

“Somewhat like the shields created by force fields on Star Trek that were used to repel alien weapons, we are seeing an invisible shield blocking these electrons,” said Professor Daniel N. Baker, the lead author of the study in a press release.

“It’s an extremely puzzling phenomenon.”

According to NASA, “killer electrons” are the devilish doppelgangers of Earth’s subatomic allies.

While the flow of electrons is used as electricity to power everything from cell phones to light bulbs, when electrons reach high speeds like that of more than 100,000 miles per second in space, they can become dangerous and have been known to destroy satellites and even injure astronauts.

The shield, said to be located some 7,200 miles from Earth and impenetrable, lies within the Van Allen radiation belts, two rings around Earth containing potent electrons and protons trapped by the Earth’s magnetic field.

In 2008, NASA’s STEREO spacecraft, discovered that electrons turn into speedy, destructive “killer electrons” in part when picked up in the Belts by powerful radio waves known as whistlers.

Luckily though: “It’s almost like theses electrons are running into a glass wall in space,” said Baker of the shield, which was discovered using data collected by NASA’s Van Allen probes.

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Despite crash of Spaceship Two ~ Virgin Galactic will continue pursuing mission to fly tourists to space


csmonitor.com

By Bryan Cronan, Staff Writer

It's been two weeks since the fatal crash of Virgin Galactic's SpaceShipTwo. As authorities continue to investigate what caused the crash, Virgin Galactic says the accident will not hinder the company's plans to send tourists to space.

It has been two weeks since a Virgin Galactic SpaceShipTwo crashed in the Mojave Desert. The crash was a big strike against the company that is trying to create a commercial private space industry.

Virgin Galactic CEO George Whitesides told a crowd Thursday that the company will continue pursuing its mission to take tourists to space. He made the comments while speaking in Culver City, Calif., to a panel organized by the Rand Corporation.

“We have a new spaceship that’s going to be ready in a few months,” Mr. Whitesides said, according to The Los Angeles Times. “So we’re going to make sure we get that one as safe as we can and keep going.”

On Oct. 31, a SpaceShipTwo crashed during a test flight, killing one pilot and injuring another. The debris from the flight was strewn across 35 miles of the Mojave Desert. Whitesides said that was "a tragic day."

Virgin Galactic is the brainchild of British billionaire Richard Branson. He is planning to take tourists to space for $250,000 a piece. After the crash, there have been growing concerns about the companies safety practices. Twenty of the 700 people who have already paid for the trip have asked for a refund after the crash.

On Nov. 7, Peter Siebold, the pilot who survived the crash, told the National Transportation Safety Board what happened shortly before the crash. He said the ship began to break apart 50,000 feet in the air, according to Engadget. He unbuckled from his seat and a parachute automatically deployed. An investigation by the NTSB found that the SpaceShipTwo's feather re-entry system was a possible cause of the crash. The other pilot, Michael Alsbury, unlocked the system earlier than intended. The NTSB said it could be another year before the final conclusion about what caused the crash is known.

The SpaceShipTwo had only conducted a few dozen test flights. And the fatal flight was only the fourth time that the rocket engines fired. The ship was also using new fuel, which engineers thought would give the engines more thrust.

“There’s so many exciting things happening now in the world of space," he said. "There’s risk but there’s great reward. ... So I think being unafraid to try new things is important as we move forward.”

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Rosetta mission: Philae lander bounces twice, lands on side ~ Cliff face blocking solar power


How Esa scientists believe Philae has landed on the comet – on its side
How Esa scientists believe Philae has landed on the comet – on its side. Photograph: European Space Agency/Reuters


Excerpt from
theguardian.com


Rosetta mission controllers must decide whether to risk making lander hop from shadow of cliff blocking sunlight to its solar panels.


The robotic lander that touched down on a comet on Wednesday came to rest on its side in the shadow of a cliff, according to the first data beamed home from the probe.

Pictures from cameras on board the European Space Agency’s Philae lander show the machine with one foot in the sky and lodged against a high cliff face that is blocking sunlight to its solar panels.
The precarious resting place means mission controllers are faced with some tough decisions over whether to try and nudge the spacecraft into a sunnier spot. If successful, that would allow Philae to fully recharge its batteries and do more science on the comet, but any sudden move could risk toppling the lander over, or worse, knock it off the comet completely.

The washing machine-sized lander was released by its Rosetta mother ship at 0835am GMT on Wednesday morning and touched down at a perfect spot on the comet’s surface. But when anchoring harpoons failed to fire, the probe bounced back off into space. So weak is the gravitational pull of the comet that Philae soared 1km into the sky and did not come down again until two hours later. “We made quite a leap,” said Stephan Ulamec, the Philae lander manager.

In the time it took the probe to land for the second time, the comet had rotated, bringing more treacherous terrain underneath. The spacecraft bounced a second time and finally came to a standstill on its side at what may be the rim of an enormous crater.

“We bounced twice and stopped in a place we’ve not entirely located,” said Jean-Pierre Bibring, Philae’s lead scientist. Teams of scientists are now trying to work out where the probe is. What mission controllers do know is that they are not where they hoped to be. “We are exactly below a cliff, so we are in a shadow permanently,” Bibring added.

With most of Philae in the dark, the lander will receive only a fraction of the solar energy that Esa had hoped for. The spacecraft needs six or seven hours of sunlight a day but is expected to receive just one and a half. Though it can operate for 60 hours on primary batteries, the probe must then switch to its main batteries which need to be recharged through its solar arrays. If Philae’s batteries run out it will go into a hibernation mode until they have more power.

The spacecraft was designed with landing gear that could hop the probe around, but from its awkward position on its side the option is considered too risky.

Though caught in a tight spot, the Philae lander’s systems appear to be working well. The Rosetta spacecraft picked up the lander’s signal on Thursday morning and received the first images and more instrument data from the surface of the comet.

One of Philae’s major scientific goals is to analyse the comet for organic molecules. To do that, the lander must get samples from the comet into several different instruments, named Ptolemy, Cosac and Civa. There are two ways to do this: sniffing and drilling. Sniffing involves opening the instruments to allow molecules from the surface to drift inside. The instruments are already doing this and returning data.

Panoramic view around the point of Philae's final touchdown on the surface of comet 67P, taken when Rosetta was about 18km from centre of comet. Parts of Philae's landing gear can be seen in this picture.
Panoramic view around the point of Philae’s final touchdown on the surface of comet 67P, taken when Rosetta was about 18km from centre of comet. Parts of Philae’s landing gear can be seen in this picture.Photograph: European Space Agency/AFP/Getty Images

Drilling is much riskier because it could make the lander topple over... Pushing down into the surface will push the lander off again. “We don’t want to start drilling and end the mission,” said Bibring.
But the team has decided to operate another moving instrument, named Mupus, on Thursday evening. This could cause Philae to shift, but calculations show that it would be in a direction that could improve the amount of sunlight falling on the probe. A change in angle of only a few degrees could help. A new panoramic image will be taken after the Mupus deployment to see if there has been any movement.

Meanwhile, the Rosetta orbiter team will continue to try to pinpoint Philae’s position.

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European Space Agency: Rosetta Successfully Lands on Comet ~ First Images Sent to Earth

This photo from Philae shows the surface during the lander's approach  Excerpt from bbc.comA European robot probe has made the first, historic landing on a comet, but its status remains uncertain after harpoons failed to anchor it to the su...

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Partial Solar Eclipse Thursday ~ Next Eclipse Not Until 2017


This gives you an idea of how much of the sun will
This chart will give you an idea of how much of the sun will be blocked by the moon at the height of the eclipse, depending on where you live. (Photo: Doyle Rice and Frank Pompa, USA TODAY; Source: NASA)
 
Excerpt from usatoday.com

Don't forget to look up Thursday.

In the afternoon, a partial solar eclipse — where the moon covers a part of the sun — will be visible across much of the USA, barring any pesky clouds that could block the show. 

The eclipse will occur over most of North America — except for a small slice of eastern Canada and eastern New England, said meteorologist Joe Rao of Space.com.


In most of the eastern half of the USA and Canada, the eclipse will still be in progress at sunset — offering dramatic views if you can find a low western horizon, according to Sky and Telescope. In New York City, the eclipse starts at 5:49 p.m. ET and will last until the sun sets at 6:03 p.m. ET.

However, "people who live east of a line running from roughly Quebec City to Montauk Point, N.Y., will miss out on the solar show, since the sun will set before the dark disc of the moon begins to encroach upon it," Rao said.


During a solar eclipse, the sun, moon and Earth form a nearly straight line, with the moon in the middle. The moon temporarily blocks the sun in select areas on Earth.
Unless you use a special filter, such as welder's glasses, never look directly at the sun during the eclipse, or at any time for that matter. Universe Today warns that dangerous ultraviolet and infrared light focused on your retinas will damage your vision for the rest of your life.

Your camera also needs a special filter in order to photograph the eclipse.

The USA's next solar eclipse — which will be a total eclipse — won't occur until August 2017.

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Taking A Bite Out of Sunlight ~ United States Expecting A Partial Solar Eclipse

Excerpt from  sciencetimes.comWhile space junkies have been ravenous this past summer with all the stellar lunar events in the sky, from the super moon trilogy to the blood moon earlier this month, experts at NASA are excited this week about a...

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Category 3 Hurricane Gonzalo Aims for Bermuda


This image provided by NOAA Wednesday Oct. 15, 2014 shows Hurricane Gonzalo, lower right, which forecasters said could become a powerful category 4 storm Wednesday as it heads toward Bermuda. The storm had top sustained winds of 125 mph (205 kph) and was centered about 665 miles (1,075 kilometers) south of Bermuda early Wednesday, the U.S. National Hurricane Center said. It was moving northwest at 13 mph (20 kph). Photo: NOAA, AP / NOAA
Photo By NOAA/AP 
This image provided by NOAA Wednesday Oct. 15, 2014 shows Hurricane Gonzalo, lower right, which forecasters said could become a powerful category 4 storm Wednesday as it heads toward Bermuda. The storm had top sustained winds of 125 mph (205 kph) and was centered about 665 miles (1,075 kilometers) south of Bermuda early Wednesday, the U.S. National Hurricane Center said. It was moving northwest at 13 mph (20 kph).

HAMILTON, Bermuda (AP) — People on this small British territory are hurrying to batten down for Hurricane Gonzalo, which is churning toward them as a major Category 3 storm just days after a tropical storm damaged homes and knocked down trees and power lines in Bermuda.
Dennis Feltgen, a meteorologist at the U.S. National Hurricane Center in Miami, said it was too early to tell whether the hurricane would actually hit Bermuda sometime Friday, but he warned residents to be prepared for severe weather.
"The eye of the hurricane does not have to go over Bermuda for them not to experience severe conditions," he said in a phone interview Wednesday.
Gonzalo had top sustained winds of 120 mph (195 kph) late Wednesday and it was centered about 580 miles (935 kilometers) south-southwest of Bermuda. It was moving north at 9 mph (15 kph), the hurricane center said. Gonzalo grew into a powerful Category 4 storm at one point Wednesday, but weakened a bit later in the day.
A hurricane warning was in effect for Bermuda, and forecasters said a dangerous storm surge could cause significant flooding on the island, which has some 64 miles (103 kilometers) of shoreline and has an area about one-third the size of Washington, D.C. Some 3 to 6 inches (8 to 15 centimeters) of rain was predicted.
The government said it would close the island's international airport Thursday night, when tropical storm conditions were first expected. Several airlines increased the number of flights departing Bermuda ahead of the storm.

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U.S. Creates Largest Protected Area in the World ~ 3X Larger than California


Photo of fish swimming in the Palmyra Atoll.
A school of fish swims under the water around Palmyra Atoll, in an area of the Pacific that is already part of a marine sanctuary.
Photograph by Randy Olson, National Geographic



By Brian Clark Howard




NEW YORK—The Obama administration announced Thursday that it will create the largest marine reserve in the world by expanding an existing monument around U.S.-controlled islands and atolls in the central Pacific.


The Pacific Remote Islands Marine National Monument will now be nearly 490,000 square miles, nearly three times the size of California and six times larger than its previous size. Commercial fishing, dumping, and mining will be prohibited in the reserve, but recreational fishing will be allowed with permits, and boaters may visit the area.


The protected area that Secretary of State John Kerry announced this morning is actually smaller than the 782,000 square miles that the president initially considered. But environmentalists, preservationists, and conservation groups that had pushed for the expansion called President Barack Obama's designation a historic victory in their efforts to limit the impact of fishing, drilling, and other activities that threaten some of the world's most species-rich waters.

Map of the pacific remote islands.
MAGGIE SMITH, NG STAFF. SOURCES: U.S. FISH AND WILDLIFE SERVICE; USGS; MARINE CONSERVATION INSTITUTE


"What has happened is extraordinary. It is history making. There is a lot of reason we should be celebrating right now," said Elliott Norse, founder and chief scientist of the Seattle-based Marine Conservation Institute.


Enric Sala, an ocean scientist and National Geographic Explorer-in-Residence, called the newly expanded monument "a great example of marine protection."


During the past several years, Sala and National Geographic's Pristine Seas project—which aims to explore, survey, and protect several of the last wild places in the world's oceans—have been key players in expeditions to the region that helped to put a spotlight on its biodiversity. Sala also met with White House officials to make the scientific case for expanding the Pacific Remote Islands monument. 


Photo of a sea anemone providing cover for a transparent shrimp in Kingman Reef, Pacific Ocean.
Tentacles of a sea anemone provide cover for a transparent shrimp in Kingman Reef, which is part of the existing marine sanctuary. Photograph by Brian Skerry, National Geographic Creative


In announcing the expansion of protected marine areas, Kerry said, “We’re committed to protecting more of the world's ocean. Today, one to three percent of the ocean is protected, that's it. That's why President Obama will sign a proclamation today that will create one of the largest maritime protected areas in the world. It will be protected in perpetuity.”

Michael Boots, chairman of the White House's Council on Environmental Quality, made clear that by expanding protected areas, the administration sought to balance the need to preserve a range of marine species with concerns from the fishing industry, which had warned about the economic impact of curtailing deep-sea fishing areas.

"We thought [the monument decision] was a good way to balance what the science was telling us was important to protect and the needs of those who use the area," Boots said.


The administration said in a statement late Wednesday that "expanding the monument will more fully protect the deep coral reefs, seamounts, and marine ecosystems unique to this part of the world, which are also among the most vulnerable areas to the impacts of climate change and ocean acidification."


In June, when he first announced his intent to expand the monument, Obama said, "I'm using my authority as president to protect some of our nation's most pristine marine monuments, just like we do on land."


The June announcement was followed by a public comment period and further analysis by the White House, officials said. Thousands of people submitted comments, with many conservation groups and scientists offering their support. Some fishing and cannery groups, as well as a few members of the U.S. Congress opposed the expansion, citing the potential a loss of commercial fishing grounds. 


Norse said that the newly protected areas will safeguard endangered seabirds and other key species, including five endangered sea turtle species (such as loggerheads and leatherbacks), sooty terns and other terns, silky sharks and oceanic whitetip sharks, beaked whales, manta rays, red-tailed tropic birds, and deep-sea corals.

The expanded monument will help ensure that "there are some places that are as pristine as possible for as long as possible," Norse said. "I think a hundred years from now, people will be praising Barack Obama for having the vision to protect the Pacific remote islands."


"A Big Step"


Obama's Democratic administration is building on a national monument that was first created by his predecessor, Republican President George W. Bush, suggesting that "ocean protection may be one of the last bipartisan issues" in the politically divided United States, says David Helvarg, the author of several books on the ocean and the founder of the advocacy group Blue Frontier Campaign.

Democratic and Republican presidents going all the way back to Teddy Roosevelt, a Republican who served from 1901 to 1909, have used the 1906 Antiquities Act to designate national monuments. The law requires simply that an area be unique and considered worthy of protection for future generations. This is the 12th time Obama has used his authority under the Antiquities Act to protect environmental areas.

The area being protected by the administration will expand the protected areas from 50 miles offshore to 200 miles offshore around three areas—Wake Island, Johnston Atoll, and Jarvis Island—the maximum reach of the United States’ exclusive economic zone. The current 50-mile offshore protections around the Howland and Baker islands, and Kingman Reef and Palmyra Atoll, will not change.


"Although 71 percent of our planet is covered with saltwater, we have protected much more of the land than the ocean," Helvarg said. But the newly expanded monument is a big step in the right direction, he added.

Enforcing fishing bans in the monument will be a big challenge, Kerry acknowledged. "Agreements won't matter if no one is enforcing them," he said. "It's going to take training and resources."
Kerry said one measure that could help deter illegal fishing in the region, as well as around the world, would be to implement the Port State Measures Agreement, an international treaty that requires member nations to prevent illegally caught fish from entering the market. Eleven nations or parties have ratified the agreement, but a total of 25 must sign before the treaty will take effect.

"Our goal is to get this done this year," Kerry said.


Meanwhile, efforts to preserve more biologically diverse waters continue.


This week, National Geographic Society announced that it is dramatically expanding its campaign to help protect marine areas, with a goal of persuading governments to officially safeguard more than 770,000 square miles.


The plan, announced by former President Bill Clinton, includes programs that target the Seychelles—an archipelago in the Indian Ocean—northern Greenland, and South America's Patagonia region. The program builds on National Geographic's Pristine Seas project, which has financed ten scientific expeditions to remote areas of ocean around the world, including in the South Pacific and off Africa, Russia, and South America.

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