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Latest Shadow biosphere Stories

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2010-12-02 13:50:00

Arizona State University scientists and their colleagues have found evidence that the toxic element arsenic can replace the essential nutrient phosphorus in biomolecules of a naturally occurring bacterium, which expands the scope of the search for life beyond Earth.  Scientists understand that all known life requires phosphorus, which is usually in the form of inorganic phosphate.  However, astrobiologists Ariel Anbar and Paul Davies of Arizona State University have...

2010-04-27 13:16:34

NASA will hold a news media teleconference at 1:30 p.m. EDT, Wednesday, April 28, to discuss the status of agency-sponsored astrobiology research, including the search for evidence of extraterrestrial life and the study of how life began on Earth. Topics also will include the quest for evidence of life on Mars, the habitability of other celestial bodies, and future technology research. This week, NASA and scientists from around the world are gathering at a biennial meeting near Houston to...

2008-10-16 18:00:07

U.S. space agency-funded research suggests lightning and gases from volcanic eruptions could have given rise to the first life on Earth. National Aeronautics and Space Administration scientists, along with researchers at Indiana University reached that conclusion after re-analyzing samples from a classic origin-of-life experiment conducted in the early 1950s. "Historically, you don't get many experiments that might be more famous than these; they re-defined our thoughts on the origin of...

2008-10-02 18:00:04

To: SCIENCE EDITORS Contact: Dwayne Brown, Headquarters, Washington, +1-202-358- 1726, dwayne.c.brown@nasa.gov, Michael Mewhinney, Ames Research Center, Moffett Field, Calif., +1-650-604-3937, michael.s.mewhinney@nasa.gov, both of NASA MOFFETT FIELD, Calif., Oct. 2 /PRNewswire-USNewswire/ -- NASA has awarded five-year grants, averaging $7 million each, to 10 research teams from across the country to study the origins, evolution, distribution, and future of life in the universe. The...

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2006-02-21 07:35:00

Boulder -- For scientists eying distant planets and solar systems for signs of alien activity, University of Colorado at Boulder Professor Carol Cleland suggests the first order of business is to keep an open mind. It may be a mistake to try to define life, given such definitions are based on a single example -- life on Earth, said Cleland, a philosophy professor and fellow at the NASA-funded CU-Boulder Center for Astrobiology. The best strategy is probably to develop a "general theory of...