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Showing posts with label NASA. Show all posts
Showing posts with label NASA. Show all posts

Tuesday, 16 October 2012

Water Particles Found On Surface Of The Moon, Scientists Say



The Apollo 11 Moon Mission - Researchers analysed samples of soil collected from the Moon by the Apollo missions and found it contained water in the form of compounds called hydroxyls.

Researchers analysed samples of soil collected from the Moon by the Apollo missions and found it contained water in the form of compounds called hydroxyls.
The water was most likely formed on the surface of the Moon by the constant stream of charged particles ejected from the Sun known as "solar wind", the scientists said.
The traditional view that the Moon was entirely dry has been proven incorrect in recent years, with growing evidence that icy drops of water can be found on its surface.
In 2009, a Nasa satellite slammed into a crater and threw up a plume which scientists found contained an unexpectedly high amount of ice, and small amounts of water have also been found in powder and rock in the Moon's outer layer.
But although the discoveries have proven the existence of water, the problem which has continued to baffle scientists is where it came from.
Now a new paper by researchers from the University of Tennessee suggests the water was produced on the Moon's surface rather than being delivered there by a comet or other piece of space debris.
Solar wind is a flow of particles continually flowing away from the Sun. The Earth's magnetic field deflects them away from our planet, but the Moon has no such protection.
Researchers analysed the soil samples and found that they had similar chemical properties to charged hydrogen particles found in the solar wind.
The findings suggest the hydrogen was brought to the surface of the Moon in the solar wind, and then combined with oxygen to form hydroxyls, compounds similar to water which contain one hydrogen and one oxygen atom. These were then stored in the soil.
Youxue Zhang, one of the researchers, said: "Our work shows that the 'water' component, the hydroxyl, is widespread in lunar materials, although not in the form of ice or liquid water that can easily be used in a future manned lunar base."
Lead author Yang Liu added: "This also means that water likely exists on Mercury and on asteroids such as Vesta or Eros further within our solar system. These planetary bodies have very different environments, but all have the potential to produce water."
In an accompanying comment article in the Nature Geoscience Journal Dr Marc Chaussidon of the Université de Lorraine in France wrote that the findings were "opening the door to another source of water for inner Solar System bodies".
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Edited By Cen Fox Post Team

Tuesday, 9 October 2012

'Curiosity' Detects Bright Object On Surface Of Mars




LOS ANGELES – 'Curiosity' returns photos from surface of Mars.

NASA's rover 'Curiosity' has survived a harrowing journey to Mars and has lived to tweet about it, as its engineers celebrated back home. 

Only minutes after touchdown, the rover's cheerful Twitter account began posting photos, saying, "No photo or it didn't happen? Well lookee here.

NASA officials say the Curiosity rover has made its first scoop of the surface of planet Mars and has detected a bright object on the ground.
Officials said in a news release Monday that they suspect the object might be a part of the six-wheeled rover, but they won't sample or scoop anymore until they figure out what it is.


The Curiosity has already beamed back pictures of bedrock that suggest a fast-moving stream once flowed on the planet.

The rover landed Aug. 5 and is on a two-year, $2.5 billion mission to study whether microbial life could have existed on Mars in the past.
Today's Mars is a frozen desert, but previous geological studies suggest it was once warmer and wetter.

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Monday, 8 October 2012

SpaceX Lifts Off With ISS Cargo








The first commercially contracted re-supply mission to the International Space Station (ISS) has lifted off.
A Falcon rocket carrying a Dragon cargo capsule lifted clear of Cape Canaveral in Florida at 20:35 (00:35 GMT).
The robotic Dragon ship will deliver 400kg of food, clothing, experiments and spares to the orbiting platform's six astronauts.
It is the maiden flight in a sequence of 12 missions that California's SpaceX company is performing for Nasa.
The US space agency is looking to the private sector to assume routine transport duties to and from low-Earth orbit.
It has given SpaceX a $1.6bn contract to keep the ISS stocked up with essentials, restoring a re-supply capability that the US lost when it retired the shuttles last year.
The terms of the contract kicked in following a successful test of Dragon's systems in May.
That demonstration saw the capsule berth with the ISS - the first commercially designed and built vehicle to do so - and then return safely to Earth.
Nasa has a second company it hopes also can soon begin operational cargo deliveries to the station.
The Orbital Sciences Corporation (OSC) will shortly test its new Antares rocket before undertaking its own ISS demonstration with a robotic vessel called Cygnus.

If that mission - tipped to take place next year - goes well then it will trigger a $1.9bn contract for Orbital.
Nasa wants eventually to put astronaut transport in the hands of the private sector, too.
Dragon capsule
A Dragon flew a demonstration mission to the space station in May
SpaceX is eyeing this business as well, and is developing the critical life-support and safety systems that would turn Dragon into a human-rated vehicle. The company says it is just a few years away from being able to provide an astronaut "taxi" service.
Nasa's policy of outsourcing its cargo and crew transport needs is intended to find savings that can be ploughed back into building a rocket and capsule system capable of taking humans beyond low-Earth to more challenging destinations.
"We're handing off to the private sector our transportation to the International Space Station so that Nasa can focus on what we do best - exploring even deeper into our Solar System, with missions to an asteroid and Mars on the horizon," explained agency administrator Charles Bolden.
Sunday's nine-minute, 14-second ascent to orbit appeared flawless.
The Falcon dropped the Dragon off in an elliptical path running from 197km above the Earth out to 328km.
"Dragon was inserted into a picture-perfect orbit," said SpaceX president Gwynne Shotwell. "Its solar arrays deployed and it's driving its way to station. So, that's just awesome."
Dragon must raise itself to the ISS's altitude, which is presently at more than 400km.
It is scheduled to arrive at the station on Wednesday. It will follow the routine established in May of parking itself just below the platform so that it can be grabbed by a robotic arm and pulled into a berthing port.
The attachment should take place at about 0540GMT.
Dragon is expected to return to Earth at the end of the month.
Its cargo then will include broken machinery and science materials that need to be handed back to researchers.
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Edited By Cen Fox Post Team

Friday, 21 September 2012

Curiosity On Verge Of A Sensational Discovery


More than half the way to its first major scientific destination, the Curiosity Mars rover will pause a few days to perform the mission's first hands-on geology, using instruments on the vehicle's robot arm to photograph and chemically assess an intriguing pyramid-shaped rock, project managers said Wednesday.
Data from the arm-mounted Alpha Particle X-ray Spectrometer, or APXS, will be compared with remote sensing data from another instrument known as Chemcam that uses a powerful laser to vaporize tiny sections of a target's surface. Debris from the laser strike is measured remotely to help determine chemical composition.
The Curiosity rover has traveled about 950 feet from its landing site and is about 650 feet from its near-term target, an area known as Glenelg where three different terrains come together.
(Credit: NASA)
"The science team has had an interest for some time now as we're driving across the plains to find a rock that looks like it's relatively uniform in composition to do some experiments between ChemCam, which we've been acquiring a lot of data with, and APXS, which we haven't used yet on a rock," said John Grotzinger, the Mars Science Laboratory project scientist.
Century Fox News: "Are we the first Martians"
"Both of those instruments could make a measurement and there could be differences between the measurements because one is measuring at a small scale (ChemCam) and one is measuring at a larger scale (APXS). These rocks that we drive by on the plains here that look dark, they probably have basaltic composition. That's a familiar material to us."
A rock dubbed "Jake," named after a Mars program engineer who died shortly after Curiosity's landing in Gale Crater, will serve as the rover's first target for a robot arm-mounted camera and chemical analyzer.
(Credit: NASA)
The rock chosen for the initial APSX measurements, and for closeup photography by the Mars Hand Lens Imager instrument, or MAHLI, has been dubbed "Jake" in honor of Jacob Matijevic, a Jet Propulsion Laboratory mathematician and engineer who died a few days after Curiosity's August 6 landing in Gale Crater.
"The hope is we can analyze this rock and then do a cross comparison between the two instruments," Grotzinger said. "Not to mention it's just a cool-looking rock there, sitting out on the plains with almost pyramidal geometry, so that's kind of fun as well."
Curiosity is expected to spend three to four days collecting data from the MAHLI, APXS, and the ChemCam instruments before resuming its slow trek to an area known as Glenelg where three different types of terrain come together. The rover has traveled about 950 feet from its landing site and has another 700 feet or so to go.
Looking toward the Glenelg site, where Curiosity will pause to carry out extensive geological observations, scientists have identified a lighter area, also visible from orbit, that may be part of an alluvial fan where water once flowed.
(Credit: NASA)
New photographs from Curiosity show the approach to Glenelg and the steplike terrain Curiosity will need to negotiate to reach the heart of the target zone.
"We really do think it's going to be interesting," Grotzinger said. "You can see a light-toned (rock) unit, which we believe to be material that from orbit has this signature, this property, of having relatively high thermal inertia. That's the ability of a material to retain its heat. So late in the day or at night, orbiters are able to observe this rock well. We don't know what the reason for that is, but it's always been a bit of a beacon for us and we're getting closer and closer to it."
As for getting there, Grotzinger said Curiosity will have to descend several yards, passing through darker layers that may be inter-bedded with the denser, light-toned material.
"We can also see in the (orbital) data that we can detour around that and kind of contour our way down into those lower reaches where we hope to do the bulk of our investigation at that Glenelg region," he said. "We have all the tools we need to get into this exciting area."
In the meantime, along with studying martian geology and weather, Curiosity's cameras also are doing a bit of astronomical observing, photographing Mars' two moons Phobos and Deimos as they pass in front of the sun. Using faster cameras than those available on earlier missions, scientists are able to precisely time the events and in so doing, measure the satellites' orbits with unprecedented accuracy.Curiosity's long-range goal is the base of Mount Sharp, a 3-mile-high mound of layered terrain in the center of Gale Crater that is expected to provide major insights into the geologic history of Mars and whether any organic compounds might be present like those required for life as it is known on Earth. The foothills of Mount Sharp are five to seven miles away and Curiosity is not expected to get there until early next year.
Cameras on the Curiosity rover photographed the martian moon Phobos as it recently passed in front of the sun. Precise measurements of the timing provide insights into the internal structures of both Mars and Phobos.
(Credit: NASA)
By studying how the orbits change over time due to gravitational interactions, researchers can gain insights into the internal composition of Mars and the moons as tidal forces affect their passage. Based on earlier observations, it appears Phobos, for example, will break apart under stress from Mars' gravity some 10 million to 15 million years from now.
"Why do we take all these images of these two little moons crossing in front of the sun?" asked Mark Lemmon, a science team co-investigator at Texas A&M University. "For one thing, they have tidal forces that they exert on Mars, they change Mars' shape ever so slightly. That, in turn, changes the moon's orbit. Phobos is slowing down, Deimos is speeding up like our moon is. This is something that happens very slowly over time.
"Phobos will eventually break up and fall into Mars and with the transits, we can measure their orbits very precisely and figure out how fast they are doing this. The reason that's interesting is it constrains Mars' interior structure. We can't go inside Mars, but we can use these to tell how much Mars deforms when the moons go by."
By precisely timing the transits, "we get information on Mars' interior structure," Lemmon said. "We think the precision of these measurements...will also tell us something about Phobos' insides and whether it's uniformly dense or if there are variations."
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Edited By Cen Fox Post Team

Saturday, 15 September 2012

"Are We The First Martians"?



Now that the fear of imaginary invaders has been replaced by a frustrating search for chemicals, a more fundamental question is emerging.
Could humans walk the sands of Mars, and actually live and work there?
That's what NASA's $2.5 billion Mars' Curiosity rover is trying to determine as it rolls heroically across the rugged but achingly desolate Martian landscape.
Placing men and women on a cold planet currently 173.5 million miles away is a question not just for poets and philosophers but for planners and policymakers.
When USA TODAY, celebrating its 30th anniversary with a look to the 21st-century future, spoke with NASA chief Charles Bolden, he emphasized "the critical importance of Curiosity, because it's not the first, but it's the most critical, the largest mission, that's a precursor for putting humans on Mars."
The first manned visits, he said, could happen around 2035 as an international endeavor. The first outposts on Mars could come after 2060.
"Mars has captured the human imagination certainly since people started gazing up at the sky," says NASA science chief John Grunsfeld, a former Hubble repair mission astronaut. "There are really very few places that humans could actually go and live some day. Mars is one of those."
Still, as the nation debates its goals for space exploration in a post-space shuttle era marked by an increasingly tight-fisted Congress and endless deficits, how improbable it is that the proposals even are being made.
Consider: John F. Kennedy's ambitious goal, announced 50 years ago this week, to put a man on the moon involved a trip of a mere 239,000 miles. Getting to Mars — even at its closest point to Earth — means a trip more than 140 times farther, lasting 200 days and with the possible bombardment by life-threatening radiation, a risk some scientists see as a deal-killer.
Even if all goes well, what would they find once they arrive?
Standing on the Red Planet
The day the first explorers set foot on Mars, a ruddy dust hanging like a curtain in the sky would tint their every view. If they stood where Curiosity is now, the sun would look less than half as large as it does from Earth. Temperatures would range from merely freezing during the day, to minus-103 degrees Fahrenheit at night.
Trying to take a breath would kill, the faint carbon dioxide atmosphere so thin it would count as a vacuum on Earth. Radiation rakes the surface in doses stronger than the astronauts receive aboard the International Space Station— the equivalent of at least 240 chest X-rays in a six-month stay.
The gravity on Mars is only 38% of Earth's. Walking — or bounding — could be Mars' first challenge, and an eventual Olympic sport.
Phoning home would be rare. The distance from Earth to Mars varies from 33 million to 249 million miles. It would take anywhere from three to 21 minutes to transmit "hello" even at the speed of light, making for stilted conversation. And for two weeks every two years, Mars and Earth are on opposite sides of the sun. Communications might be impossible.
Instead of the towering cities imagined by John Carter of Mars creator Edgar Rice Burroughs, lava caves lining the slopes of the largest volcano in the solar system, Olympus Mons,look safer as houses for future Martian tenants.
More likely, plans call for pre-fabricated Martian habitats to be launched two years before astronauts themselves begin their journey. Once secured on the surface, astronauts would spend their days on Mars brewing methane fuel and oxygen from water and carbon deposits that evidence suggests remain locked under the Martian soil.
For all that, NASA spacecraft have revealed a Red Planet that looks more hospitable — with caves, water and minerals — than the dusty picture painted by the 1970s Viking lander missions, which transmitted images of a sterile desert.
And as NASA's Curiosity rover makes its first tracks — exploring, sniffing and zapping the surface of Mars for signs that life once graced the Red Planet in the past — the panoramas it reveals are of a planet that looks not unlike the high deserts on Earth.
Surviving the rays of Mars
What Curiosity learns about the weather and radiation hazards of Mars will help determine how manned landings play out.
Just getting there would be a triumph. The trip could take 200 days, with Martian stayovers ranging from a month to 500 days.
Such long voyages might seem an eternity for astronauts trapped in a spacecraft. But in 2011, the European Space Agency's "Mars 500" project isolated six men for 520 days in a simulated Mars trip. And several cosmonauts have experienced long stays in space, one of them spending 14 months in microgravity.
"I think there will be good circumstantial evidence that people will be able to tolerate a Mars mission when the time comes," says space psychologist Nick Kanas of the University of California-San Francisco.
Radiation storms — which are known to affect telecommunications even on the atmosphere-shielded Earth — are the more immediate worry, especially in the barely-there atmosphere of Mars.
A radiation detector aboard the rover already has collected months of data about hazards astronauts would face from cosmic rays and solar storm radiation on their trip to Mars.
"Sitting down in the belly of the spacecraft, the rover had about as much radiation shielding as astronauts have on the International Space Station," says Donald Hassler of the Southwest Research Institute in Boulder, Colo. He heads the rover's radiation instrument team.
Astronauts could hide from solar storm radiation in shielded parts of a spacecraft or lander, Hassler says. Based on readings from Curiosity, "we are finding the radiation from solar events is significant," he concedes.
Even with shielding, Mars travel poses lifetime radiation risks for "cataracts, skin damage, central nervous system damage, and impaired immune systems," as well as fatal cancers, according to a 2008 National Research Council Report. Radiation sickness from solar storms might endanger a mission, the report added.
The rover's radiation measures also tell scientists how deeply microbes on Mars, and astronauts, might have to hide under the surface to escape those effects. Would people from Earth have to burrow below the Martian surface to survive?
Is Mars worth the risk?
"This would be the most exciting adventure I could possibly imagine," SpaceX chief Elon Musk told The Daily Show's Jon Stewart, who asked the space entrepreneur why he wanted to walk on Mars.
"It's not so crazy to talk about astronauts visiting Mars," scientist Hassler says. "It really is a question of when we decide to do it."
"It engages human fascination," says NASA's Grunsfeld.
Where rocket pioneer Werner von Braun once proposed sending fleets of silver-finned rocket ships to Mars on a trip piloted by 70 men, Musk today hopes to send people there on private rockets, eventually making the trip a $500,000 ticket.
A Dutch reality-television-show effort, Mars One, has announced a plan to send colonists on a one-way trip to Mars starting in 2023 (the group's website "frequently asked questions" list begins with, "Is this for real?" — to which it answers, "Yes, it is!").
Whether government-funded, privately financed or some undreamt reality-show adventure, "it is not an unreasonable question to ask whether 30 years from now, will people have been to Mars?" says space policy expert John Logsdon, author of John F. Kennedy and the Race to the Moon. "It is a possibility, verging on a probability," he says.
Others aren't so sure.
Congress has balked at sending astronauts to Mars for decades, most notably in 1989 after a $500 billion cost estimate killed off one ambitious NASA plan. For that reason, Bolden was emphatic in his remarks to USA TODAY's editorial board that any manned missions to Mars would be international ones that spread the costs around.
The Obama administration recently cut unmanned Martian exploration by $500 million. Republican candidate Mitt Romney has called for "clearer priorities" in space efforts.
Even Roger Launius, a former NASA historian who is curator at the Smithsonian Air and Space Museum in Washington, D.C., which is now offering a Mars exhibit, says he is "pessimistic" about Mars travel.
"We wanted to give people a glimpse of the future in the exhibit. I doubt we are going to see (Mars) any other way for the foreseeable future," he says.
"This is just not realistic, even spread out over many years, to think we will spend this kind of money," says Arizona State University historian Stephen Pyne, author of Voyager: Seeking Newer Worlds in the Third Great Age of Discovery. In an age of robotic rovers such as Curiosity, he says, "we don't need people to plant the flag anymore to be explorers."
The Martian dream
A century ago, astronomer Percival Lowell stirred generations with speculation that the deep scars in the planet's surface were canals created by Martians. Author H.G. Wells went a step further, writing that malevolent Martians watched Earth with "envious eyes." And author Bradbury predicted people from Earth would be the first real Martians.
In widely noted remarks in January, physicist Stephen Hawking called for human colonies on Mars in the next century as a safeguard against catastrophe on Earth. We'll need a colony of the Red Planet by the next century, Hawking suggested, given the way things are going on the Blue Planet.
In cosmic terms, Mars is achingly close and the technology seems to be there, at least judging by the remarkable success of rovers like Curiosity.
If and when the call to Mars comes, there will likely be plenty of volunteers, says Bolden, a former space shuttle pilot.
"I'd go myself," he says. "But my wife wouldn't let me.
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Edited By Cen Fox Post Team

Thursday, 13 September 2012

About Curiosity's 7 Foot Arm

Curiosity nearly completes 7-foot arm tests on Mars  Washington: NASA’s Mars Curiosity team is almost finished robotic arm tests in preparation for the rover to touch and examine its first Martian rock. 

Tests with the 7-foot (2.1-meter) arm have allowed the mission team to gain confidence in the arm’s precise maneuvering in Martian temperature and gravity conditions. 

During these activities, Curiosity has remained at a site it reached by its most recent drive on Sept. 5. The team will resume driving the rover this week and use its cameras to seek the first rock to touch with instruments on the arm. 

“We’re about to drive some more and try to find the right rock to begin doing contact science with the arm,” said Jennifer Trosper, Curiosity mission manager at NASA’s Jet Propulsion Laboratory in Pasadena, Calif. 

Two science instruments -- a camera called Mars Hand Lens Imager (MAHLI) that can take close-up, colour images and a tool called Alpha Particle X-Ray Spectrometer (APXS) that determines the elemental composition of a target rock -- have passed preparatory tests at the rover’s current location. 

Century Fox news: Rover sends unseen images of Mars(Video)

The instruments are mounted on a turret at the end of the arm and can be placed in contact with target rocks. 

Curiosity’s Canadian-made APXS had taken atmospheric readings earlier, but its first use on a solid target on Mars was this week on a calibration target brought from Earth. X-ray detectors work best cold, but even the daytime APXS tests produced clean data for identifying elements in the target. 

“The spectrum peaks are so narrow, we’re getting excellent resolution, just as good as we saw in tests on Earth under ideal conditions,” said APXS principal investigator Ralf Gellert of the University of Guelph in Guelph, Ontario, Canada. 


More: Curiosity travels 23 feet on Mars

“The good news is that we can now make high-resolution measurements even at high noon to support quick decisions about whether a sample is worthwhile for further investigations,” the scientist added. 

The adjustable-focus MAHLI camera this week has produced sharp images of objects near and far. 

MAHLI is also aiding evaluation of the arm’s ability to position its tools and instruments. 

Curiosity moved the arm to predetermined “teach points” Sept. 11, including points above each of three inlet ports where it will later drop samples of soil and powdered rock into analytical instruments inside the rover. Images from the MAHLI camera confirmed the placements. Photos taken before and after opening the inlet cover for the chemistry and mineralogy (CheMin) analytical instrument also confirmed good operation of the cover. 

A test last week that checked X-rays passing through an empty sample cell in CheMin worked well. It confirmed the instrument beneath the inlet opening is ready to start analyzing soil and rock samples.


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Edited By Cen Fox Post Team

Wednesday, 5 September 2012

Nasa's Voyager 'Dancing On The Edge' Of Outer Space


Nasa's Voyager 1, launched in 1977, is nearing the edge of the solar system and may already be
NASA's Voyager 1 spacecraft was launched in 1977  

Nasa's Voyager 1, launched in 1977, is nearing the edge of the solar system and may already be "dancing on the edge" of outer space, the scientists behind the project said on Tuesday.


In a lecture marking the approaching 35th anniversary of the Voyager project, Ed Stone said it could be "days, months or years" before it finally breaks into interstellar space.
Earlier this year a surge in a key indicator fuelled hopes that the craft was nearing the so-called heliopause, which marks the boundary between our solar system and outer space.
Scientists were intrigued in May by an increase in cosmic rays hitting the spacecraft, which for decades has snapped images of the Earth and other planets in the solar system as it has made its long journey into outer space.
But measurements since then have fluctuated up and down, indicating that, while the craft is near to the edge, it may still not get there for some time.
"The question is, how much further is it to the heliopause?" Stone asked rhetorically at the lecture at the headquarters of the Jet Propulsion Laboratory (JPL) in Pasadena, California.
"We don't know. whether we're dancing along the edge of a new region which is connected to the outside," added Stone, a Voyager project scientist from the California Institute of Technology in Pasadena.
Noting that Voyager 1 moves a billion miles every three years, he said: "It's hard to imagine that it's going to be too much longer, but I can't tell you if it's days, months or years. I really can't tell you."
But he underlined how important a milestone it will be.
"Crossing into interstellar space – that will be a historic moment when the first object launched from Earth finally leaves the bubble," he said.
Before May's surge in cosmic rays researchers had said they expected Voyager 1 would leave the solar system and enter interstellar space – between the end of the Sun's influence and the next star system – within two years.
Nasa has described Voyager 1 – now 11 billion miles away from the Sun – and its companion Voyager 2 as "the two most distant active representatives of humanity and its desire to explore."
The scientists controlling Voyager 1 – whose 1970s technology means it has only a 100,000th of the computer memory of an 8 gigabyte iPod Nano – decided to turn off its cameras after it passed Neptune in 1989, to preserve power.
Assuming the craft continues to function normally, they will have to start turning off other on-board instruments from 2020, and it is expected to run out of power completely in 2025, said Stone.

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Edited By Cen Fox Post Team

Tuesday, 28 August 2012

Curiosity Takes Breath Taking Photo Of Mount Sharp On Mars

Image credit: NASA/JPL-Caltech
-- A year from now, if all goes as planned, NASA's Mars rover Curiosity will be in the hills and valleys of Mount Sharp, a three-mile high mound of layered rock rising from the floor of Gale Crater where the probe landed on Aug. 6.

The first high-resolution, focused images of Mount Sharp, released Monday, surprised scientists who realized that the mound has tilted layers of rock on top of layers that are positioned relatively horizontal.


"The cool thing here is that the cameras have discovered something that we were ignorant about," lead scientist John Grotzinger, with the California Institute of Technology, told Discovery News during a press conference Monday. "This thing just kind of jumped out."

Places like the Grand Canyon on Earth have similar features, but the tilted layers are mostly beneath, not above, the flat ones, a result of plate tectonics that rotate the planet's older layers.

On Mount Sharp, scientists suspect the tilted layers are due to the physical processes, such as wind or water, that built up the deposits.

"One day, we we hope to go across and check it out," Grotzinger said.


While the angles of the layers are interesting, scientists are more focused on what they contain. The older, relatively flat layers appear from orbital imagery to contain clays and minerals which on Earth form in the presence of water.

That's a starting point for the $2.5 billion Mars Science Lab mission, NASA's first astrobiology mission since the 1970s-era Viking probes. Curiosity's goal is to dig down in the chemistry of Mount Sharp to determine if it has the ingredients and conditions to support and preserve life.

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Edited By Cen Fox Post Team

Sunday, 26 August 2012

Neil Armstrong, 1st man on the moon, dies at 82





              The family of Neil Armstrong, the first man to walk on the moon, says he has died at age 82. (Aug. 25)  
             Foto: AP
The family of Neil Armstrong, the first man to walk on the moon, says he has died at age 82. (Aug. 25) 

Neil Armstrong was a soft-spoken engineer who became a global hero when as a steely-nerved pilot he made "one giant leap for mankind" with a small step onto the moon. The modest man, who had people on Earth entranced and awed from almost a quarter-million miles away, but credited others for the feat, died Saturday. He was 82.
Armstrong died following complications resulting from cardiovascular procedures, his family said in a statement. Armstrong had had a bypass operation this month, according to NASA. His family didn't say where he died; he had lived in suburban Cincinnati.
Armstrong commanded the Apollo 11 spacecraft that landed on the moon July 20, 1969, capping the most daring of the 20th century's scientific expeditions. His first words after becoming the first person to set foot on the surface are etched in history books and the memories of those who heard them in a live broadcast.
"That's one small step for man, one giant leap for mankind," Armstrong said.
(Armstrong insisted later that he had said "a'' before man, but said he, too, couldn't hear it in the version that went to the world.)
In those first few moments on the moon, during the climax of a heated space race with the Soviet Union, Armstrong stopped in what he called "a tender moment" and left a patch to commemorate NASA astronauts and Soviet cosmonauts who had died in action.
"It was special and memorable but it was only instantaneous because there was work to do," Armstrong told an Australian television interviewer this year.
Armstrong and Buzz Aldrin spent nearly three hours walking on the lunar surface, collecting samples, conducting experiments and taking photographs.
"The sights were simply magnificent, beyond any visual experience that I had ever been exposed to," Armstrong once said.
The moonwalk marked America's victory in the Cold War space race that began Oct. 4, 1957, with the launch of the Soviet Union's Sputnik 1, a 184-pound satellite that sent shock waves around the world.
Although he had been a Navy fighter pilot, a test pilot for NASA's forerunner and an astronaut, Armstrong never allowed himself to be caught up in the celebrity and glamour of the space program.
"I am, and ever will be, a white socks, pocket protector, nerdy engineer," he said in 2000 in one of his rare public appearances. "And I take a substantial amount of pride in the accomplishments of my profession."
Rice University historian Douglas Brinkley, who interviewed Armstrong for oral histories for NASA, said Armstrong fit every requirement the space agency needed for the first man to walk on moon, especially because of his engineering skills and the way he handled celebrity by shunning it.
         "I think his genius was in his reclusiveness," said Brinkley. "He was the ultimate hero in an era of corruptible men."
Fellow Ohioan and astronaut John Glenn, one of Armstrong's closest friends, recalled Saturday how Armstrong was down to the last 15 seconds to 35 seconds of fuel when he finally brought the lunar module Eagle down on the Sea of Tranquility.
"That showed a dedication to what he was doing that was admirable," Glenn said.
A man who kept away from cameras, Armstrong went public in 2010 with his concerns about President Barack Obama's space policy that shifted attention away from a return to the moon and emphasized private companies developing spaceships. He testified before Congress, and in an email to The Associated Press, Armstrong said he had "substantial reservations," and along with more than two dozen Apollo-era veterans, he signed a letter calling the plan a "misguided proposal that forces NASA out of human space operations for the foreseeable future."
Armstrong was among the greatest of American heroes, Obama said in a statement.
"When he and his fellow crew members lifted off aboard Apollo 11 in 1969, they carried with them the aspirations of an entire nation. They set out to show the world that the American spirit can see beyond what seems unimaginable — that with enough drive and ingenuity, anything is possible," Obama said.
Obama's Republican opponent Mitt Romney echoed those sentiments, calling Armstrong an American hero whose passion for space, science and discovery will inspire him for the rest of his life.
"With courage unmeasured and unbounded love for his country, he walked where man had never walked before. The moon will miss its first son of earth," Romney said.
NASA Administrator Charles Bolden recalled Armstrong's grace and humility.
"As long as there are history books, Neil Armstrong will be included in them, remembered for taking humankind's first small step on a world beyond our own," Bolden said in a statement.
Armstrong's modesty and self-effacing manner never faded.
When he appeared in Dayton in 2003 to help celebrate the 100th anniversary of powered flight, he bounded onto a stage before 10,000 people packed into a baseball stadium. But he spoke for only a few seconds, did not mention the moon, and quickly ducked out of the spotlight.
He later joined Glenn, by then a senator, to lay wreaths on the graves of Wilbur and Orville Wright. Glenn introduced Armstrong and noted it was 34 years to the day that Armstrong had walked on the moon.
"Thank you, John. Thirty-four years?" Armstrong quipped, as if he hadn't given it a thought.
At another joint appearance, the two embraced and Glenn commented: "To this day, he's the one person on earth I'm truly, truly envious of."
Armstrong's moonwalk capped a series of accomplishments that included piloting the X-15 rocket plane and making the first space docking during the Gemini 8 mission, which included a successful emergency splashdown.
In the years afterward, Armstrong retreated to the quiet of the classroom and his southwestern Ohio farm. Aldrin said in his book "Men from Earth" that Armstrong was one of the quietest, most private men he had ever met.
In the Australian interview, Armstrong acknowledged that "now and then I miss the excitement about being in the cockpit of an airplane and doing new things."
At the time of the flight's 40th anniversary, Armstrong again was low-key, telling a gathering that the space race was "the ultimate peaceful competition: USA versus U.S.S.R. It did allow both sides to take the high road with the objectives of science and learning and exploration."
Glenn, who went through jungle training in Panama with Armstrong as part of the astronaut program, described him as "exceptionally brilliant" with technical matters but "rather retiring, doesn't like to be thrust into the limelight much."
Derek Elliott, curator of the Smithsonian Institution's U.S. Air and Space Museum from 1982 to 1992, said the moonwalk probably marked the high point of space exploration.
The manned lunar landing was a boon to the prestige of the United States, which had been locked in a space race with the former Soviet Union, and re-established U.S. pre-eminence in science and technology, Elliott said.
"The fact that we were able to see it and be a part of it means that we are in our own way witnesses to history," he said.
The 1969 landing met an audacious deadline that President John F. Kennedy had set in May 1961, shortly after Alan Shepard became the first American in space with a 15-minute suborbital flight. (Soviet cosmonaut Yuri A. Gagarin had orbited the Earth and beaten the U.S. into space the previous month.)
"I believe this nation should commit itself to achieving the goal, before the decade is out, of landing a man on the moon and returning him safely to Earth," Kennedy had said. "No single space project in this period will be more impressive to mankind, or more important to the long-range exploration of space; and none will be so difficult or expensive to accomplish."
The end-of-decade goal was met with more than five months to spare. "Houston: Tranquility Base here," Armstrong radioed after the spacecraft settled onto the moon. "The Eagle has landed."
"Roger, Tranquility," Apollo astronaut Charles Duke radioed back from Mission Control. "We copy you on the ground. You've got a bunch of guys about to turn blue. We're breathing again. Thanks a lot."
The third astronaut on the mission, Michael Collins, circled the moon in the mother ship Columbia 60 miles overhead while Armstrong and Aldrin went to the moon's surface.
"He was the best, and I will miss him terribly," Collins said through NASA.
In all, 12 American astronauts walked on the moon from 1969 to the last moon mission in 1972.
For Americans, reaching the moon provided uplift and respite from the Vietnam War, from strife in the Middle East, from the startling news just a few days earlier that a young woman had drowned in a car driven off a wooden bridge on Chappaquiddick Island by Sen. Edward Kennedy. The landing occurred as organizers were gearing up for Woodstock, the legendary three-day rock festival on a farm in the Catskills of New York.
Armstrong was born Aug. 5, 1930, on a farm near Wapakoneta in western Ohio. He took his first airplane ride at age 6 and developed a fascination with aviation that prompted him to build model airplanes and conduct experiments in a homemade wind tunnel.
As a boy, he worked at a pharmacy and took flying lessons. He was licensed to fly at 16, before he got his driver's license.
Armstrong enrolled in Purdue University to study aeronautical engineering but was called to duty with the U.S. Navy in 1949 and flew 78 combat missions in Korea.
After the war, Armstrong finished his degree from Purdue and later earned a master's degree in aerospace engineering from the University of Southern California. He became a test pilot with what evolved into the National Aeronautics and Space Administration, flying more than 200 kinds of aircraft from gliders to jets.
Armstrong was accepted into NASA's second astronaut class in 1962 — the first, including Glenn, was chosen in 1959 — and commanded the Gemini 8 mission in 1966. After the first space docking, he brought the capsule back in an emergency landing in the Pacific Ocean when a wildly firing thruster kicked it out of orbit.
Armstrong was backup commander for the historic Apollo 8 mission at Christmastime in 1968. In that flight, Commander Frank Borman, Jim Lovell and Bill Anders circled the moon 10 times, paving the way for the lunar landing seven months later.
Aldrin said he and Armstrong were not prone to free exchanges of sentiment.
"But there was that moment on the moon, a brief moment, in which we sort of looked at each other and slapped each other on the shoulder ... and said, 'We made it. Good show,' or something like that," Aldrin said.
An estimated 600 million people — a fifth of the world's population — watched and listened to the landing, the largest audience for any single event in history.
Parents huddled with their children in front of the family television, mesmerized by what they were witnessing. Farmers abandoned their nightly milking duties, and motorists pulled off the highway and checked into motels just to see the moonwalk.
Television-less campers in California ran to their cars to catch the word on the radio. Boy Scouts at a camp in Michigan watched on a generator-powered television supplied by a parent.
Afterward, people walked out of their homes and gazed at the moon, in awe of what they had just seen. Others peeked through telescopes in hopes of spotting the astronauts.
In Wapakoneta, media and souvenir frenzy was swirling around the home of Armstrong's parents.
"You couldn't see the house for the news media," recalled John Zwez, former manager of the Neil Armstrong Air and Space Museum. "People were pulling grass out of their front yard."
Armstrong, Aldrin and Collins were given ticker tape parades in New York, Chicago and Los Angeles and later made a 22-nation world tour. A homecoming in Wapakoneta drew 50,000 people to the city of 9,000.
In 1970, Armstrong was appointed deputy associate administrator for aeronautics at NASA but left the following year to teach aerospace engineering at the University of Cincinnati.
He remained there until 1979 and during that time bought a 310-acre farm near Lebanon, where he raised cattle and corn. He stayed out of public view, accepting few requests for interviews or speeches.
"He didn't give interviews, but he wasn't a strange person or hard to talk to," said Ron Huston, a colleague at the University of Cincinnati. "He just didn't like being a novelty."
Those who knew him said he enjoyed golfing with friends, was active in the local YMCA and frequently ate lunch at the same restaurant in Lebanon.
In 2000, when he agreed to announce the top 20 engineering achievements of the 20th century as voted by the National Academy of Engineering, Armstrong said there was one disappointment relating to his moonwalk.
"I can honestly say — and it's a big surprise to me — that I have never had a dream about being on the moon," he said.
From 1982 to 1992, Armstrong was chairman of Charlottesville, Va.-based Computing Technologies for Aviation Inc., a company that supplies computer information management systems for business aircraft.
He then became chairman of AIL Systems Inc., an electronic systems company in Deer Park, N.Y.
Armstrong married Carol Knight in 1999, and the couple lived in Indian Hill, a Cincinnati suburb. He had two adult sons from a previous marriage.
Armstrong's is the second death in a month of one of NASA's most visible, history-making astronauts. Sally Ride, the first American woman in space, died of pancreatic cancer on July 23 at age 61.
Just prior to the 50th anniversary of Glenn's orbital flight this past February, Armstrong offered high praise to the elder astronaut and said that Glenn had told him many times how he wished he, too, had flown to the moon on Apollo 11. Glenn said it was his only regret.
Noted Armstrong in an email: "I am hoping I will be 'in his shoes' and have as much success in longevity as he has demonstrated." Glenn is 91.
At the Griffith Observatory in Los Angeles on Saturday, visitors held a minute of silence for Armstrong.
For anyone else who wanted to remember him, his family's statement made a simple request:
"Honor his example of service, accomplishment and modesty, and 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."
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