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Sep 07

Three compilations of historic NASA images have been released on The Commons on Flickr, the fruit of a collaborative effort between Flickr (), NASA and the Internet Archive.


Although all of the photographs in these sets have been available to the public via NASAimages.org since 2008, NASA on The Commons allows the photographs to be tagged, annotated and given keywords. It also widens the opportunities to share and embed these photographs, ultimately increasing overall awareness of the NASA archives.

The inaugural sets in the collection chronicle the building of NASA, namesakes behind NASA’s 10 field centers, and iconic images of takeoffs and landings of spacecraft and aircraft.


NASA historians will continue to add images and photo sets to The Commons over time.


Image courtesy of Flickr, NASA on The Commons


Courtesy: http://mashable.com/2010/08/30/nasa-flick/



Nov 26


This image provided by NASA shows geyser-like eruptions of ice particles and water vapor shooting out from the south pole of Saturn's moon, Enceladus. Photo: AP

A spacecraft has tasted oxygen in the atmosphere of another world for the first time, while flying low over Saturn’s icy moon, Rhea.

Nasa’s Cassini probe scooped oxygen from the thin atmosphere of the planet’s moon while passing overhead at an altitude of 97km in March this year. Until now, wisps of oxygen have only been detected on planets and their moons indirectly, using the Hubble space telescope and other major facilities.

Instruments aboard Cassini revealed an extremely thin oxygen and carbon dioxide atmosphere that is sustained by high-energy particles slamming into the moon’s surface and kicking up atoms, molecules and ions.

Astronomers have counted 62 moons orbiting Saturn. At 1,500km wide, Rhea is the second largest and is thought to be made almost entirely of ice.

“This really is the first time that we’ve seen oxygen directly in the atmosphere of another world,” said Andrew Coates, at University College London’s Mullard space science laboratory, a co-author of the study, published in the journal Science.

“Such chemistry could be a prerequisite for life. All evidence from Cassini indicates that Rhea is too cold and devoid of the liquid water necessary for life as we know it,” said team leader Ben Teolis, of Southwest Research Institute, Texas.

Copyright: Guardian News & Media 2010

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