Quantcast

Latest Stardust Stories

First Evidence Of Space Weathering Found On Comet Wild2
2012-03-27 09:44:24

The traditional picture of comets as cold, icy, unchanging bodies throughout their history is being reappraised in the light of analyses of dust grains from Comet Wild2. A team led by the University of Leicester has detected the presence of iron in a dust grain, evidence of space weathering that could explain the rusty reddish colour of Wild2´s outer surface. The results will be presented by Dr John Bridges at the National Astronomy Meeting in Manchester on Tuesday 27th March. The...

Scientists Analyze Tiny Comet Grain To Date Jupiter's Formation
2012-03-02 04:12:19

Particles from comet 81P/Wild 2 brought to Earth in 2006 by NASA's Stardust spacecraft indicate that Jupiter formed more than three million years after the formation of the first solids in our Solar System. The new finding helps test Solar System formation theories, which do not agree on the timing of Jupiter though it is certain the formation of this giant planet affected how materials moved, collided, and coalesced during the complex planet-forming process. Published in the February 1, 2012...

Image 1 - NASA Developing Comet Harpoon For Sample Return
2011-12-14 10:29:44

[ Watch the Video ] The best way to grab a sample of a rotating comet that is racing through the inner solar system at up to 150,000 miles per hour while spewing chunks of ice, rock and dust may be to avoid the risky business of landing on it. Instead, researchers want to send a spacecraft to rendezvous with a comet, then fire a harpoon to rapidly acquire samples from specific locations with surgical precision while hovering above the target. Using this "standoff" technique would allow...

Image 1 - Hyperactive Hartley 2 Has A Split History
2011-10-04 12:20:12

The latest analysis of data from NASA's Deep Impact spacecraft shows that comet 103P/Hartley 2 is hyperactive in terms of the material it spews out, compared to the other comets observed up close to date.  The comet also shows surprising diversity - ice on the comet´s sunlit surface is found in patches that are isolated from areas of dust. In addition, one lobe of the dog-bone shaped comet may have lost much more of the primordial material from the formation of the comet than the...

fdedaa46d4dbdcaa88901e16228d4af7
2011-08-09 09:35:00

Researchers found more evidence that meteorites can carry DNA components created in space. The latest research indicates that certain nucleobases reach the Earth on meteorites in greater diversity and quantity than previously thought. "People have been discovering components of DNA in meteorites since the 1960's, but researchers were unsure whether they were really created in space or if instead they came from contamination by terrestrial life," Dr. Michael Callahan of NASA's Goddard Space...

2011-05-31 12:11:00

HAMPTON, Va., May 31, 2011 /PRNewswire-USNewswire/ -- When a newly announced NASA mission to collect an asteroid sample returns to Earth, all eyes will be on the last few minutes of the seven-year flight. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) This phase of the OSIRIS-REx mission announced this week is called entry, descent and landing, and it's the job of NASA's Langley Research Center in Hampton, Va., to make sure it works. Images and video at...

2011-05-25 15:54:00

DENVER, May 25, 2011 /PRNewswire/ -- NASA has selected the University of Arizona to lead a sample-return mission to an asteroid. The OSIRIS-REx team is led by Dr. Michael Drake, Director of the University of Arizona's Lunar and Planetary Laboratory. NASA Goddard Space Flight Center in Greenbelt, Md. will manage the mission for NASA. Lockheed Martin (NYSE: LMT) will build the spacecraft. The OSIRIS-REx mission is budgeted for approximately $800 million, excluding the launch vehicle. The...

2011-05-25 15:00:00

WASHINGTON, May 25, 2011 /PRNewswire-USNewswire/ -- NASA will launch a spacecraft to an asteroid in 2016 and use a robotic arm to pluck samples that could better explain our solar system's formation and how life began. The mission, called Origins-Spectral Interpretation-Resource Identification-Security-Regolith Explorer, or OSIRIS-REx, will be the first U.S. mission to carry samples from an asteroid back to Earth. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) "This is a...

07e4773fae65b16125e1794ee96b0e49
2011-04-06 06:30:00

By Daniel Stolte, University of Arizona The discovery of minerals requiring liquid water for their formation challenges the paradigm of comets as "dirty snowballs" frozen in time. For the first time, scientists have found convincing evidence for the presence of liquid water in a comet, shattering the current paradigm that comets never get warm enough to melt the ice that makes up the bulk of their material. "Current thinking suggests that it is impossible to form liquid water inside of a...


Latest Stardust Reference Libraries

6_348877a21702e82deaef967e7029f7ad2
2004-10-19 04:45:41

Comet -- A comet is a small body from the outer reaches of the solar system similar to an asteroid but composed of ice. Often described as "dirty snowballs," they are composed largely of carbon dioxide ice, methane ice, and water ice with a mixture of dust and small stony aggregates mixed in. Comets are thought to be small pieces of debris left over from the formation of the solar system, representing a sample of the original composition of the nebula that condensed to form the Sun and all...

More Articles (1 articles) »
Word of the Day
caparison
  • A cloth or covering, more or less ornamented, laid over the saddle or furniture of a horse, especially of a sumpter-horse or horse of state.
  • Clothing, especially sumptuous clothing; equipment; outfit.
  • To cover with a caparison, as a horse.
  • To dress sumptuously; adorn with rich dress.
This word ultimately comes from the Medieval Latin 'cappa,' cloak.
Related