Friday, August 31, 2012

Reuters: Science News: Scientists test new marine robot hurricane-hunters

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Scientists test new marine robot hurricane-hunters
Aug 31st 2012, 20:58

By Harriet McLeod

Fri Aug 31, 2012 4:38pm EDT

(Reuters) - As Tropical Storm Isaac was on its path through the Caribbean before becoming a hurricane in the Gulf of Mexico this week, U.S. scientists were testing an experimental new weather spy tool - an unmanned, marine robot about the size of a surfboard that can gather storm data at sea level.

A National Oceanic and Atmospheric Administration (NOAA)research laboratory in Miami sent the "Wave Glider," a floating platform of sensors with an underwater stabilizer christened Alex, into ocean waters about 100 miles north of Puerto Rico last week to try to intercept Isaac.

"Isaac did not barrel right over it," said Alan Leonardi, deputy director of NOAA's Atlantic Oceanographic and Meteorological Laboratory in Miami, after the storm passed to the south of the island before turning north and making landfall near New Orleans as a Category 1 hurricane.

"But Isaac being the size storm it is, the Wave Glider was able to collect data from the outer rain bands. We can't steer a hurricane, but we did get good data out of it."

A few days later, scientists got a second look at Isaac, from another Wave Glider - named G2 - on a separate oil and gas mission in the Gulf of Mexico.

The eye of Isaac passed barely 60 miles east of G2, enabling it to collect valuable ocean data, including evidence of a dramatic drop in water temperature, "suggesting that Isaac was vacuuming the heat from the Gulf," according to its manufacturers, Liquid Robotics, based in Sunnyvale, California.

Bill Vass, CEO of Liquid Robotics, grew up in Louisiana and is a veteran of hurricanes. His grandparents died in Hurricane Camille in 1969, and his family lost a home to Katrina.

CLOSE ENCOUNTER

"We are proud that it was able to survive the mission," battling 85 mph sustained winds, and gusts up to 120 mph," he said. "Hopefully the Wave Glider will make it possible to better predict the severity and risk to everyone in the Gulf Coast area in the future."

Testing of another robotic boat, the Emergency Integrated Life-Saving Lanyard, or EMILY, will begin in the Pacific Ocean off California this week, said Justyna Nicinska, project manager for NOAA's Weather In-Situ Deployment Optimization Method.

Its builder, Hydronalix, based in Green Valley, Arizona, launched EMILY in 2010 as a robotic lifeguard. For NOAA, the builder outfitted the 5-foot, 5-inch (1.65-meter) boat with storm data-gathering sensors.

NOAA bought 10 EMILYs at $30,000 each last spring, Nicinska said. Researchers said they plan to send one into a tropical storm by the end of the 2012 hurricane season.

Both Wave Glider and EMILY can measure a tropical storm's surface air temperature, wind chill, barometric pressure, actual wind speed, relative wind speed, wind direction, ocean temperature and ocean salinity, researchers said.

Both will be less expensive to operate than C-130 hurricane-hunter flights or NOAA ocean research vessels that cost $10,000 to $20,000 a day to operate, Leonardi said.

The tiny boats will also be used for other NOAA projects in marine resources, fisheries, archaeology, imagery and bottom topography, researchers said.

But meteorologists hope to plug the craft's storm data into forecast models and better predict when a tropical storm is going to intensify into a hurricane, researchers said.

"We're trying to understand what happens at the ocean surface, which is where the energy transfer happens between the ocean and the overlaying hurricane," said Erica Rule, spokeswoman for NOAA's oceanographic and meteorological laboratory.

"Heat energy becomes the kinetic energy that drives the hurricane, and it comes from the warm water that they pass over," she said. "It's why hurricanes die when they go over land or over colder water."

AUTONOMOUS, MILITARY VERSION

The Wave Glider is so rugged it can stay at sea for a year at a time relying on renewable energy from technology that converts wave motion into energy for propulsion.

Solar panels power the onboard communications and sensor equipment, and it can be piloted by satellite from the company's California offices.

The robots are already being used in marine research by scientists off the coast of California monitoring great white sharks. A military version, dubbed the "Shark" has also been adapted for intelligence, communications and surveillance operations.

"The Department of Defense is a big customer of ours," said Vass.

Leonardi said his NOAA lab is working with the builder to have several ready for the 2013 hurricane season. They will be placed in a line east of the Leeward Islands in the path of an approaching tropical storm, he said.

"It's what we call a picket fence," he said. "The dream scenario would be to have six or 12 of these all get run over by a storm."

(Additional reporting by David Adams; Editing by David Adams and Todd Eastham)

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Reuters: Science News: Hundreds pay tribute to Neil Armstrong at Kennedy Space Center

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Hundreds pay tribute to Neil Armstrong at Kennedy Space Center
Aug 31st 2012, 21:22

People take pictures during a memorial service for Neil Armstrong in the Apollo Saturn V Center at Kennedy Space Center, Florida August 31, 2012. U.S. astronaut Armstrong, who took a giant leap for mankind when he became the first person to walk on the moon, has died at the age of 82, his family said on August 25, 2012. Attendees of the three minute ceremony toured the space center after paying their respects for Armstrong. REUTERS/Michael Brown

1 of 10. People take pictures during a memorial service for Neil Armstrong in the Apollo Saturn V Center at Kennedy Space Center, Florida August 31, 2012. U.S. astronaut Armstrong, who took a giant leap for mankind when he became the first person to walk on the moon, has died at the age of 82, his family said on August 25, 2012. Attendees of the three minute ceremony toured the space center after paying their respects for Armstrong.

Credit: Reuters/Michael Brown

By Irene Klotz

CAPE CANAVERAL, Florida | Fri Aug 31, 2012 5:22pm EDT

CAPE CANAVERAL, Florida (Reuters) - As family and friends of Neil Armstrong gathered in Ohio on Friday for a private memorial service, NASA paid tribute to the Apollo astronaut, calling him a great American and a space hero.

"He never dwelled on his remarkable accomplishments or sought the limelight," Kennedy Space Center director and former astronaut Robert Cabana said during a short tribute to Armstrong at the Visitor Complex's Apollo-Saturn 5 Center.

"He just wanted to be part of this remarkable team and to continue to move us forward," Cabana said.

More than 400 people, including NASA employees, community leaders and tourists gathered to remember Armstrong, who died on August 25 following complications from heart surgery. He was 82.

A national memorial service in Washington is expected to be held in September.

Armstrong rocketed into the history books as commander of NASA's Apollo 11 mission in July 1969, the first to land astronauts on the lunar surface.

Cabana, a retired Marine colonel who flew four space shuttle missions, hailed Armstrong as a pilot and astronaut, but said his greatest contribution was as a teacher.

"He wanted to share his knowledge and his experience and see us continue to be a world leader," in space and aeronautics, Cabana said.

"He always took the time to share his thoughts on technical issues and his experiences from the past, and he was greatly interested in Kennedy Space Center's path forward to the future," Cabana said.

The Florida space port is being transformed following the end of the 30-year-old space shuttle program last year. NASA intends to open the base to commercial, research and military partners.

Armstrong had agreed to speak at the Kennedy Space Center's 50th anniversary gala next month, Cabana said.

"When I got hold of him he said, 'You know, I really don't want to be the guest of honor. I just want to be another out-of-town attendee coming to celebrate,'" Cabana said.

"I said, 'Well Neil, will you still be willing to talk?' And he said, 'Well, of course. Can you give me a hint on what you'd like me to talk about?' -- as if we wouldn't hang on every word that he had to say no matter what it was," Cabana added.

"That's the kind of guy Neil was," he said.

NASA administrator Charles Bolden, also a former astronaut, said the United States has an obligation to build on Armstrong's legacy.

"Neil Armstrong's first step on the moon paved the way for others to be the 'first' to step foot on another planet," Bolden said in a statement on Friday.

"A grateful nation offers praise and salutes a humble servant who answered the call and dared to dream," he said.

(Editing by Kevin Gray and Eric Walsh)

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Reuters: Science News: Spineless creatures under threat, from worms to bees-study

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Spineless creatures under threat, from worms to bees-study
Aug 31st 2012, 12:14

By Alister Doyle

OSLO | Fri Aug 31, 2012 8:14am EDT

OSLO (Reuters) - The vital tasks carried out by tiny "engineers" like earthworms that recycle waste and bees that pollinate crops are under threat because one fifth of the world's spineless creatures may be at risk of extinction, a study showed on Friday.

The rising human population is putting ever more pressure on the "spineless creatures that rule the world" including slugs, spiders, jellyfish, lobsters, corals, and bugs such as beetles and butterflies, it said.

"One in five invertebrates (creatures without a backbone) look to be threatened with extinction," said Ben Collen at the Zoological Society of London (ZSL) of an 87-page report produced with the International Union for Conservation of Nature.

"The invertebrates are the eco-system engineers," he told Reuters. "They produce a lot of the things that humans rely on and they produce them for free."

The report said that invertebrates, creatures that have no internal skeleton, faced loss of habitat, pollution, over-exploitation and climate change.

The 'services' they provide - helping humans whose growing numbers threaten their survival - include water purification, pollination, waste recycling, and keeping soils productive. The value of insect pollination of crops, for instance, has been valued at 153 billion euros ($191 billion) a year, it said.

A 1997 study put the global economic value of soil biodiversity - thanks to often scorned creatures such as worms, woodlice and beetles - at $1.5 trillion a year.

ROMAN EMPERORS

Other services include seafood from mussels and clams, silk spun by worms and the purple dyes from a type of snail that were used exclusively in the robes of Roman emperors.

The study said the level of threat was similar to that facing vertebrates - creatures with internal skeletons - including mammals like blue whales and lions as well as reptiles and birds. A 2010 IUCN study found that one fifth of vertebrates were at risk.

Collen said people have wrongly tended to ignore spineless creatures, thinking of them as small, abundant and invulnerable to human pressures. Until now, conservation spending has focused on high-profile species such as eagles, tigers and polar bears.

"This report tries to put invertebrates on the map," he said. Invertebrates make up almost 80 percent of the world's species.

The report focused on the current state of the planet. The projected increase in the world's human population to 9 billion by 2050 from 7 billion now and other factors such as man-made climate change could make things worse for invertebrates.

The report, which assessed 12,000 species in the IUCN's Red List of endangered species, called for a switch to "green accounting" to ensure that the benefits of services provided by small creatures are built into national accounts such as GDP.

($1 = 0.8001 euros)

(Reporting By Alister Doyle, editing by Tim Pearce)

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Thursday, August 30, 2012

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Reuters: Science News: Stuck bolt on space station stymies spacewalkers

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Stuck bolt on space station stymies spacewalkers
Aug 30th 2012, 21:39

In this still image taken from video, Japan Aerospace Exploration Agency Flight Engineer Akihiko Hoshide takes a ride on the end of the space arm during a spacewalk outside the International Space Station, August 30, 2012. REUTERS/NASA/Handout

In this still image taken from video, Japan Aerospace Exploration Agency Flight Engineer Akihiko Hoshide takes a ride on the end of the space arm during a spacewalk outside the International Space Station, August 30, 2012.

Credit: Reuters/NASA/Handout

CAPE CANAVERAL, Florida | Thu Aug 30, 2012 5:39pm EDT

CAPE CANAVERAL, Florida (Reuters) - NASA on Thursday halted attempts to replace a power device on the International Space Station after spacewalking astronauts repeatedly failed to free a stuck bolt, officials said.

NASA astronaut Sunita Williams and Japan's Akihiko Hoshide, both station flight engineers, had planned to spend 6.5 hours outside the orbital outpost to work on its power system and install electrical cables for a new Russian module expected to arrive next year.

The astronauts ran into problems after removing the station's balky 220-pound (100-kg) power-switching unit, one of four used in a system that generates electrical power from the station's solar array wings.

Williams reported finding thin metal shavings on a bolt on the old unit and around the bolt housing.

The astronauts used a can of nitrogen gas to blow away the shavings before attempting to install the new unit, but problems mounted.

Repeated attempts to attach the new device failed when a bolt jammed.

"We're kind of at a loss of what else we can try," astronaut Jack Fischer at NASA's Mission Control Center in Houston told the crew after more than an hour of trouble-shooting. "If you guys have any thoughts or ideas or brilliant schemes on what we can do, let us know."

Hoshide suggested using a tool that provides more force on bolts, but NASA engineers were reluctant to try anything that could make the situation worse.

As the spacewalk slipped past seven hours, flight controllers told the astronauts to tether the unit in place, clean up their tools and head back into the station's airlock.

"We're going to figure it out another day," Fischer said.

NASA was expected to hold a news conference later on Thursday to discuss what effect, if any, the loss of one power-switching unit will have on station operations and science.

The spacewalk was NASA's first since the final space shuttle mission in July 2011.

Thursday's outing followed a six-hour Russian spacewalk on August 20 by cosmonauts Gennady Padalka and Yuri Malenchenko to relocate a crane, launch a small science satellite and install micrometeoroid shields on the station's Zvezda command module.

The station, a $100-billion project of 15 countries, is an orbiting laboratory used for medical and basic science experiments, microgravity research and technology development.

Williams was able to finish most of the work to install electrical lines for the new Russian laboratory. But the astronauts were unable to get to a third task replacing a camera on the station's robot arm.

(Editing by Xavier Briand)

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Reuters: Science News: Rocket blasts off to put NASA radiation belt probes into orbit

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Rocket blasts off to put NASA radiation belt probes into orbit
Aug 30th 2012, 09:10

By Irene Klotz CAPE CANAVERAL, Florida | Thu Aug 30, 2012 5:10am EDT

By Irene Klotz CAPE CANAVERAL, Florida (Reuters) - An unmanned Atlas 5 rocket lifted off Thursday from Cape Canaveral Air Force Station in Florida to put a pair of heavily shielded NASA science satellites into position to study Earth's radiation belts.

The 190-foot (58-meter) tall rocket blasted off at 4:05 a.m. EDT (0805 GMT), soaring out over the Atlantic Ocean toward an orbit as far as 19,042 miles above the planet's surface.

Riding atop the rocket were the identical twin Radiation Belt Storm Probes, which are expected to spend two years surveying the Van Allen radiation belts, hostile regions that surround Earth that most other spacecraft try to avoid.

Named after University of Iowa physicist James Van Allen, the two doughnut-shaped belts of trapped particles were discovered in 1958 by Explorer 1, the first U.S. science satellite. They are held in place by Earth's magnetic field, which traps the electrically charged particles from the sun and deep space.

How the belts form and why they sometimes balloon out is a long-standing mystery.

Understanding the phenomenon is more than scientific curiosity. Every spacecraft orbiting Earth, including the $100 billion International Space Station and its crew, fly through the high-radiation regions, which can degrade solar panels and affect electronics.

"Modern society depends on satellites and other space-based technologies ... making the research and understanding that will come from (the probes) invaluable to building better protected satellites in the future," New Jersey Institute of Technology physicist Lou Lanzerotti said at a pre-launch news conference.

Once the satellites are in orbit, they are expected to spend two years flying in tandem through the heart of the radiation belts. The inner belt begins about 650 miles above Earth and extends to about 8,000 miles, but at times it can dip as low as about 125 miles. The space station flies about 250 miles above the planet.

The outer belt begins at an altitude of about 8,000 miles and extends to about 26,000 miles.

The solar-powered probes, heavily shielded to operate in the radiation belts, will fly in slightly different, highly elliptical orbits that are inclined 10 degrees to the planet's equator, allowing them to periodically lap each other.

The satellites, built and operated by Johns Hopkins University's Applied Physics Lab, will fly as close as 100 miles to each one another, and as far as 24,000 miles apart.

The dual measurements are key to understanding how the belts puff out and contract over time and in response to solar activity.

"If you imagine sitting on a life raft in the ocean and you suddenly go down and come up again, you don't know very much about what caused you to go down and come up," said deputy project scientist Nicola Fox.

"If you have a friend who is sitting on a life raft a little way away, you can say ‘Well, did we both go down and up at the same time?' In which case it's a big-scale feature like a tsunami. Did one of us go down and then the other one? You can really start to look at the global dynamics of what's happening in the radiation belts," Fox said.

United Launch Alliance is a partnership of Lockheed Martin and Boeing. The mission cost $686 million, including the launch vehicle.

(Editing by Louise Ireland)

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Reuters: Science News: "Little flash" as bionic eye brings amazed woman some sight

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"Little flash" as bionic eye brings amazed woman some sight
Aug 30th 2012, 06:41

By Thuy Ong

SYDNEY | Thu Aug 30, 2012 2:41am EDT

SYDNEY (Reuters) - A bionic eye has given an Australian woman partial sight and researchers say it is an important step towards eventually helping visually impaired people get around independently.

Dianne Ashworth, who has severe vision loss due to the inherited condition retinitis pigmentosa, was fitted with a prototype bionic eye in May at the Royal Victorian Eye and Ear Hospital. It was switched on a month later.

"All of a sudden I could see a little flash ... it was amazing," she said in a statement.

"Every time there was stimulation there was a different shape that appeared in front of my eye."

The bionic eye, designed, built and tested by the Bionic Vision Australia, a consortium of researchers partially funded by the Australian government, is equipped with 24 electrodes with a small wire that extends from the back of the eye to a receptor attached behind the ear.

It is inserted into the choroidal space, the space next to the retina within the eye.

"The device electrically stimulates the retina," said Dr Penny Allen, a specialist surgeon who implanted the prototype.

"Electrical impulses are passed through the device, which then stimulate the retina. Those impulses then pass back to the brain (creating the image)."

The device restores mild vision, where patients are able to pick up major contrasts and edges such as light and dark objects. Researchers hope to develop it so blind patients can achieve independent mobility.

"Di is the first patient of three with this prototype device, the next step is analyzing the visual information that we are getting from the stimulation," Allen said.

The operation itself was made simple so it can be readily taught to eye surgeons worldwide.

"We didn't want to have a device that was too complex in a surgical approach that was very difficult to learn," Allen.

Similar research has been conducted at Cornell University in New York by researchers who have deciphered the neural code, which are the pulses that transfer information to the brain, in mice.

The researchers have developed a prosthetic device that has succeeded in restoring near-normal sight to blind mice.

According to the World Health Organization, 39 million people around the world are blind and 246 million have low vision.

"What we're going to be doing is restoring a type of vision which is probably going to be black and white, but what we're hoping to do for these patients who are severely visually impaired is to give them mobility," Allen said.

(Reporting By Thuy Ong; Editing by Elaine Lies and Robert Birsel)

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Wednesday, August 29, 2012

Reuters: Science News: Planet has two parent stars and a sibling, NASA telescope finds

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Planet has two parent stars and a sibling, NASA telescope finds
Aug 29th 2012, 21:24

By Irene Klotz

CAPE CANAVERAL, Florida | Wed Aug 29, 2012 5:24pm EDT

CAPE CANAVERAL, Florida (Reuters) - In a dazzling and previously undetected display of orbital dynamics, two planets beyond the solar system have been found circling a pair of stars, scientists using NASA's Kepler space telescope said on Wednesday.

Unlike single planets orbiting single stars, the planets in the Kepler-47 system, located about 5,000 light years away in the constellation Cygnus, are flying around a "moving target," San Diego State University astronomer Jerome Orosz said in a paper published in this week's Science magazine.

As a consequence, when and how long it takes for the planets to orbit their parent stars varies, a telltale sign of so-called "circumbinary orbits."

Kepler works by detecting slight dips in the amount of light coming from target stars caused by orbiting planets passing by, or transiting, relative to the observatory's line of sight.

Last year, astronomers announced the first planet found to be orbiting a pair of stars.

The Kepler-47 family is more complex, with at least two planets circling a pair of stars that whirl around each other every 7.5 days.

One star is similar to the sun, though only 84 percent as bright. Its diminutive partner is two-thirds smaller and 175 percent dimmer.

Flying around the duo are planets Kepler-47b, which orbits in 49.5 days, and Kepler-47c, which takes 303 days to circle the parent stars.

The inner planet is about three times the size of Earth and too close to its parent stars to support life, scientists believe.

The outer world, Kepler-47c, lies within the so-called "habitable zone," where temperatures could support liquid water on the surface, provided it had a surface. Astronomers suspect Kepler-47c is a gas giant, slightly bigger than Neptune. But it could have life-friendlier moons.

Kepler scientists previously discovered four systems each having two stars and one planet. The discovery of multiple planets in a dual-star system taxes currently held theories about how planets form.

"The multi-planet nature of the Kepler-47 system establishes that despite the chaotic environment around binary stars, planetary systems can form and persist close to the binary," Orosz wrote.

(Editing by Jane Sutton and Eric Beech)

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Reuters: Science News: Newly discovered dust-obscured galaxies may be missing link

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Newly discovered dust-obscured galaxies may be missing link
Aug 29th 2012, 21:27

NASA's Wide-field Infrared Survey Explorer (WISE) has identified about 1,000 extremely obscured objects over the sky, as marked by the magenta symbols in this undated handout of a full-sky survey released by NASA August 29, 2012. REUTERS/NASA/JPL-Caltech/UCLA

NASA's Wide-field Infrared Survey Explorer (WISE) has identified about 1,000 extremely obscured objects over the sky, as marked by the magenta symbols in this undated handout of a full-sky survey released by NASA August 29, 2012.

Credit: Reuters/NASA/JPL-Caltech/UCLA

By Irene Klotz

CAPE CANAVERAL, Florida | Wed Aug 29, 2012 5:27pm EDT

CAPE CANAVERAL, Florida (Reuters) - Scientists on Wednesday unveiled a new species in the cosmic zoo, a super-heated, dust-shrouded object called a "hot DOG," which may represent a missing link in galaxy evolution.

A full-sky survey by NASA's wide-field infrared WISE telescope turned up about 1,000 hot, dust-obscured galaxies, or hot DOGs, each of which pump out as much light as 100 trillion sun-like stars.

The objects are rare, accounting for about one in 100,000 light sources, and difficult to find since most of their energy is masked by dust.

Astronomers believe hot DOGs, which are twice as warm as similar galaxies, may be a transitional state between disk-shaped galaxies, like the Milky Way, and elliptical galaxies.

Most of the hot DOGs found by WISE are about 10 billion light years away, meaning they formed when the universe was a fraction of its present age.

Scientists suspect conditions in the early universe were more conducive for seeding and growing these hot galaxies, but they are not ruling out that the phenomenon could occur today.

"There is either just a weird set of circumstances that rarely comes up, or a common set of circumstances that comes up for only a very short period of time," that allows hot DOGs to form, said WISE project scientist Peter Eisenhardt of NASA's Jet Propulsion Laboratory in Pasadena, California.

Because the galaxies do not have enough stars to account for all their heat, scientists suspect they may contain unusually active super-massive black holes, which are regions of space so dense with matter that not even light can escape the grip of gravity.

At times, black holes feed on surrounding material, providing telltale signs of their existence.

All galaxies are believed to host a black hole, though some, such as Sagittarius A, located at the center of the Milky Way, are relatively dormant, at least at the present time.

Scientists estimate Sagittarius A contains 4 million times the mass of the sun. Other black holes are substantially larger, approaching 10 billion times the sun's mass.

Among the 563 million infrared objects detected by WISE during its two-year mission are millions of super-massive black holes.

The findings, which were unveiled during a conference call with reporters on Wednesday, are being published in the Astrophysical Journal.

(Editing by Jane Sutton and Stacey Joyce)

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Monday, August 27, 2012

Reuters: Science News: Bill Nye the Science Guy says creationism not good for kids

Reuters: Science News
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Bill Nye the Science Guy says creationism not good for kids
Aug 28th 2012, 05:01

Bill Nye, star of the television science program, ''Bill Nye the Science Guy'', poses as he arrives as a guest at the premiere of the film ''The Astronaut Farmer'' in Los Angeles February 20, 2007. REUTERS/Fred Prouser

Bill Nye, star of the television science program, ''Bill Nye the Science Guy'', poses as he arrives as a guest at the premiere of the film ''The Astronaut Farmer'' in Los Angeles February 20, 2007.

Credit: Reuters/Fred Prouser

By Lily Kuo

NEW YORK | Tue Aug 28, 2012 1:01am EDT

NEW YORK (Reuters) - Scientist and children's television personality Bill Nye, in a newly released online video, panned biblical creationism and implored American parents who reject the scientific theory of evolution not to teach their beliefs to their youngsters.

"I say to the grownups, 'If you want to deny evolution and live in your world that's completely inconsistent with everything we've observed in the universe that's fine. But don't make your kids do it,'" said Nye, best known as host of the educational TV series "Bill Nye the Science Guy."

The video, titled "Creationism Is Not Appropriate for Children," was posted on Thursday by the online knowledge forum Big Think to YouTube and had netted more than 1.3 million views as of Monday.

In it Nye said widespread public doubt in the scientific concept of evolution -- which holds that human beings and all other forms of life developed from a process of random genetic mutation and natural selection -- would hinder a country long renowned for its innovation, intellectual capital and a general grasp of science.

"When you have a portion of the population that doesn't believe in (evolution) it holds everybody back, really," he said.

According to a Gallup poll that surveyed 1,012 adults in May, 46 percent of Americans can be described as creationists for believing that God created humans in their present form at some point within the last 10,000 years.

Education advocates have argued for decades over what children should be taught in public schools in regard to the formation of the universe, life and humans.

The U.S. Supreme Court ruled in 1987 that requiring biblical creation to be taught in public schools alongside evolution was unconstitutional as a violation of the First Amendment separation between church and state.

In April, a law was passed that protects teachers in Tennessee who wish to critique or analyze what they view as the scientific weaknesses of evolution, making it the second state, after Louisiana, to enable teachers to more easily espouse alternatives to evolution in the classroom.

Nye said that while many adults may believe in creationism, children should be taught evolution in order to understand science. Absent a grasp of evolution, he said, "You're just not going to get the right answers." And he called evolution the "fundamental idea in all of life science, in all of biology."

Teaching children the building blocks of science is essential for the country's future, he added, saying, "We need them. We need scientifically literate voters and taxpayers for the future."

Nye's popular show, produced by Disney's Buena Vista Television, aired from September 1993 to June 1998 on PBS and was also syndicated to local television stations.

(Editing by Lisa Shumaker)

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Reuters: Science News: Postcards from Mars show rover's key science targets

Reuters: Science News
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Postcards from Mars show rover's key science targets
Aug 28th 2012, 02:57

The base of Mars' Mount Sharp - the rover's eventual science destination - is pictured in this August 27, 2012 NASA handout photo taken by the Curiosity rover. The image is a portion of a larger image taken by Curiosity's 100-millimeter Mast Camera on August 23. Scientists enhanced the color to show the Martian scene under the lighting conditions we have on Earth, which helps in analyzing the terrain. REUTERS/NASA/Handout

1 of 2. The base of Mars' Mount Sharp - the rover's eventual science destination - is pictured in this August 27, 2012 NASA handout photo taken by the Curiosity rover. The image is a portion of a larger image taken by Curiosity's 100-millimeter Mast Camera on August 23. Scientists enhanced the color to show the Martian scene under the lighting conditions we have on Earth, which helps in analyzing the terrain.

Credit: Reuters/NASA/Handout

By Irene Klotz

CAPE CANAVERAL, Florida | Mon Aug 27, 2012 10:57pm EDT

CAPE CANAVERAL, Florida (Reuters) - NASA on Monday showed off the first high-resolution, color portrait images taken by the Mars rover Curiosity, detailing a mound of layered rock where scientists plan to focus their search for the chemical ingredients of life on the Red Planet.

The stunning images reveal distinct tiers near the base of the 3-mile- (5-km-)tall mountain that rises from the floor of the vast, ancient impact basin known as Gale Crater, where Curiosity landed on August 6 to begin its two-year mission.

Scientists estimate it will be a year before the six-wheeled, nuclear-powered rover, about the size of a small car, physically reaches the layers of interest at the foot of the mountain, 6.2 miles away from the landing site.

From earlier orbital imagery, the layers appear to contain clays and other hydrated minerals that form in the presence of water.

While previous missions to Mars have uncovered strong evidence for vast amounts of water flowing over its surface in the past, Curiosity was dispatched to hunt for organic materials and other chemistry considered necessary for microbial life to evolve.

The $2.5 billion Curiosity project, NASA's first astrobiology mission since the 1970s-era Viking probes to Mars, is the first to bring all the tools of a state-of-the-art geochemistry laboratory to the surface of a distant planet.

But the latest images from Curiosity, taken at a distance from its primary target of exploration, already have given scientists a new view of the formation's structure.

The layers above where scientists expect to find hydrated minerals show sharp tilts, offering a strong hint of dramatic changes in Gale Crater, located in the planet's southern hemisphere near its equator.

SLANTED LAYERS EXPOSED

Mount Sharp, the name given to the towering formation at the center of the crater, is believed to be the remains of sediment that once completely filled the 96-mile- (154-km-) wide basin.

"This is a spectacular feature that we're seeing very early," project scientist John Grotzinger, with the California Institute of Technology, told reporters on Monday. "We can sense that there is a big change on Mount Sharp."

The higher layers are steeply slanted relative to the layers of underlying rock, the reverse of similar features found in Earth's Grand Canyon.

"The layers are tilted in the Grand Canyon due to plate tectonics, so it's typical to see older layers be more deformed and more rotated than the ones above them," Grotzinger said. "In this case, you have flat-line layers on Mars overlaid by tilted layers. The science team, of course, is deliberating over what this means."

He added: "This thing just kind of jumped out at us as being something very different from what we ever expected."

Absent plate tectonics, the most likely explanation for the angled layers has to do with the physical manner in which they were built up, such as being deposited by wind or by water.

"On Earth, there's a whole host of mechanisms that can generate inclined strata," Grotzinger said. "Probably we're going to have to drive up there to see what those strata are made of."

Also Monday, NASA said it used the rover to broadcast a message of congratulations to the Curiosity team from NASA chief Charles Bolden, a demonstration of the high bandwidth available through a pair of U.S. science satellites orbiting Mars.

"This is the first time that we've had a human voice transmitted back from another planet" beyond the moon, said Chad Edwards, chief telecommunications engineer for NASA's Mars missions at the Jet Propulsion Laboratory in Pasadena, California.

"We aren't quite yet at the point where we actually have a human present on the surface of Mars ... it is a small step," Edwards said.

(Editing by Steve Gorman and Philip Barbara)

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Reuters: Science News: Will.i.am song blasts to Mars and back, via Curiosity

Reuters: Science News
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Will.i.am song blasts to Mars and back, via Curiosity
Aug 28th 2012, 01:43

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Analysis & Opinion

Handout image courtesy of NASA shows tracks left by the Curiosity rover on Mars August 22, 2012. REUTERS/NASA/JPL/Handout

Handout image courtesy of NASA shows tracks left by the Curiosity rover on Mars August 22, 2012.

Credit: Reuters/NASA/JPL/Handout

LOS ANGELES | Mon Aug 27, 2012 9:43pm EDT

LOS ANGELES (Reuters) - NASA's Curiosity rover is making global headlines as it travels uncharted territory on Mars, and it will venture into new realms back on Earth this week when it premieres a new will.i.am song.

The Black Eyed Peas rapper's tune "Reach For The Stars" will be broadcast live from the surface of Mars, via Curiosity, at 1 p.m. PST (4 p.m. EDT/2000 GMT) on Tuesday to a news conference at NASA's Jet Propulsion Laboratory in Pasadena, California, the organization said in a statement on Monday.

The debut of the song, described as an ode to the singer's "passion for science, technology and space exploration," will be linked to an educational event in which members of the Curiosity team will explain the song's transmission across space to students, as well as the rover's overall mission.

The project is a collaboration between NASA and the rapper's i.am.angel Foundation, which aims to provide digital resources in classrooms from kindergarten to grade 12.

The foundation will announce a new science, technology, arts, engineering and mathematics initiative featuring the Mars Curiosity Rover and other NASA assets.

(Reporting By Piya Sinha-Roy; editing by Bob Tourtellotte and Todd Eastham)

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Reuters: Science News: First man on moon Neil Armstrong dead at 82

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First man on moon Neil Armstrong dead at 82
Aug 27th 2012, 13:58

This NASA file image shows U.S. astronaut Neil Armstrong, the Apollo 11 Mission Commander, standing next to the Lunar Module ''Eagle'' on the moon July 20, 1969. REUTERS/Edwin Aldrin-NASA/Handout

1 of 6. This NASA file image shows U.S. astronaut Neil Armstrong, the Apollo 11 Mission Commander, standing next to the Lunar Module ''Eagle'' on the moon July 20, 1969.

Credit: Reuters/Edwin Aldrin-NASA/Handout

By Mary Slosson

Mon Aug 27, 2012 9:58am EDT

(Reuters) - U.S. astronaut Neil Armstrong, who took a giant leap for mankind when he became the first person to walk on the moon, has died at the age of 82, his family said on Saturday.

Armstrong died following complications from heart-bypass surgery he underwent earlier this month, the family said in a statement, just two days after his birthday on August 5.

As commander of the Apollo 11 mission, Armstrong became the first human to set foot on the moon on July 20, 1969. As he stepped on the dusty surface, Armstrong said: "Â"That's one small step for (a) man, one giant leap for mankind."

Those words endure as one of the best known quotes in the English language.

The Apollo 11 astronauts' euphoric moonwalk provided Americans with a sense of achievement in the space race with Cold War foe the Soviet Union and while Washington was engaged in a bloody war with the communists in Vietnam.

Neil Alden Armstrong was 38 years old at the time and even though he had fulfilled one of mankind's age-old quests that placed him at the pinnacle of human achievement, he did not revel in his accomplishment. He even seemed frustrated by the acclaim it brought.

"I guess we all like to be recognized not for one piece of fireworks but for the ledger of our daily work," Armstrong said in an interview on CBS's "60 Minutes" program in 2005.

He once was asked how he felt knowing his footprints would likely stay on the moon's surface for thousands of years. "I kind of hope that somebody goes up there one of these days and cleans them up," he said.

A VERY PRIVATE MAN

James Hansen, author of "First Man: The Life of Neil A. Armstrong," told CBS: "All of the attention that ... the public put on stepping down that ladder onto the surface itself, Neil never could really understand why there was so much focus on that."

The Apollo 11 moon mission turned out to be Armstrong's last space flight. The next year he was appointed to a desk job, being named NASA's deputy associate administrator for aeronautics in the office of advanced research and technology.

Armstrong's post-NASA life was a very private one. He took no major role in ceremonies marking the 25th anniversary of the moon landing. "He's a recluse's recluse," said Dave Garrett, a former NASA spokesman.

Hansen said stories of Armstrong dreaming of space exploration as a boy were apocryphal, although he was long dedicated to flight. "His life was about flying. His life was about piloting," Hansen said.

Born August 5, 1930, in Wapakoneta, Ohio, Armstrong was the first of three children of Stephen and Viola Armstrong. He married his college sweetheart, Janet Shearon, in 1956. They were divorced in 1994, when he married Carol Knight.

Armstrong had his first joyride in a plane at age 6. Growing up in Ohio, he began making model planes and by his early teens had amassed an extensive aviation library. With money earned from odd jobs, he took flying lessons and obtained his pilot's license even before he got a car license.

In high school he excelled in science and mathematics and won a U.S. Navy scholarship to Purdue University in Indiana, enrolling in 1947. He left after two years to become a Navy pilot, flying combat missions in the Korean War and winning three medals.

FLYING TEST PLANES

After the war he returned to Purdue and graduated in 1955 with an aeronautical engineering degree. He joined the National Advisory Committee on Aeronautics (NACA), which became NASA in 1958.

Armstrong spent seven years at NACA's high-speed flight station at Edwards Air Force Base in California, becoming one of the world's best test pilots. He flew the X-15 rocket plane to the edge of space - 200,000 feet up at 4,000 mph.

In September 1962, Armstrong was selected by NASA to be an astronaut. He was command pilot for the Gemini 8 mission and backup command pilot for the Gemini 11 mission, both in 1966.

On the Gemini 8 mission, Armstrong and fellow astronaut David Scott performed the first successful docking of a manned spacecraft with another space vehicle.

Armstrong put his piloting skills to good use on the moon landing, overriding the automatic pilot so he and fellow astronaut Edwin "Buzz" Aldrin would not have to land their module in a big rocky crater.

Yet the landing was not without danger. The lander had only about 30 seconds of fuel left when Armstrong put it down in an area known as the Sea of Tranquility and calmly radioed back to Mission Control on Earth, "Houston, Tranquility Base here. The Eagle has landed."

Aldrin, who along with Armstrong and Michael Collins formed the Apollo 11 crew, told BBC radio that he would remember Armstrong as "a very capable commander and leader of an achievement that will be recognized until man sets foot on the planet Mars."

Armstrong left the National Aeronautics and Space Administration (NASA) a year after Apollo 11 to become a professor of engineering at the University of Cincinnati.

DECLINES OFFERS TO RUN FOR OFFICE

After his aeronautical career, Armstrong was approached by political groups, but unlike former astronauts John Glenn and Harrison Schmitt who became U.S. senators, he declined all offers.

In 1986, he served on a presidential commission that investigated the explosion that destroyed the space shuttle Challenger, killing its crew of seven shortly after launch from Cape Canaveral in January of that year.

Armstrong made a rare public appearance several years ago when he testified to a congressional hearing against President Barack Obama administration's plans to buy rides from other countries and corporations to ferry U.S. astronauts to and from the International Space Station.

Armstrong also said that returning humans to the moon was not only desirable, but necessary for future exploration -- even though NASA says it is no longer a priority.

He lived in the Cincinnati area with his wife, Carol.

"We are heartbroken to share the news that Neil Armstrong has passed away," the family said in their statement. "Neil was our loving husband, father, grandfather, brother and friend."

His family expressed hope that young people around the world would be inspired by Armstrong's feat to push boundaries and serve a cause greater than themselves.

"The next time you walk outside on a clear night and see the moon smiling down at you, think of Neil Armstrong and give him a wink," the family said.

Obama said that Armstrong "was among the greatest of American heroes - not just of his time, but of all time. ...

"Today, Neil's spirit of discovery lives on in all the men and women who have devoted their lives to exploring the unknown - including those who are ensuring that we reach higher and go further in space. That legacy will endure - sparked by a man who taught us the enormous power of one small step."

Glenn, an original NASA astronaut with Armstrong, spoke of his colleague's humble nature. "He was willing to dare greatly for his country and he was proud to do that and yet remained the same humble person he'd always been," he told CNN on Saturday.

The space agency sent out a brief statement in the wake of the news, saying it "offers its condolences on today's passing of Neil Armstrong, former test pilot, astronaut and the first man on the moon."

Armstrong is survived by his two sons, a stepson and stepdaughter, 10 grandchildren, a brother and a sister, NASA said.

Some controversy still surrounds his famous quote. The live broadcast did not have the "a" in "one small step for a man ..." He and NASA insisted static had obscured the "a," but after repeated playbacks, he admitted he may have dropped the letter and expressed a preference that quotations include the "a" in parentheses.

Asked to describe what it was like to stand on the moon, he told CBS:

"It's an interesting place to be. I recommend it."

(Writing by Philip Barbara, editing by Bill Trott and Christopher Wilson)

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