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Post by moabiter on Nov 14, 2010 23:05:07 GMT -8
MEDIA ADVISORY : M10-157 NASA Announces Televised Chandra News Conference WASHINGTON -- NASA will hold a news conference at 12:30 p.m. EST on Monday, Nov. 15, to discuss the Chandra X-ray Observatory's discovery of an exceptional object in our cosmic neighborhood. The news conference will originate from NASA Headquarters' television studio, 300 E St. SW in Washington and carried live on NASA TV. Scientists involved in the research will be available to answer questions. Panelists providing analysis of the research include: - Jon Morse, director, Astrophysics Division, NASA Headquarters in Washington - Kimberly Weaver, astrophysicist, NASA's Goddard Space Flight Center, Greenbelt, Md. - Alex Filippenko, astrophysicist, University of California, Berkeley www.nasa.gov/home/hqnews/2010/nov/HQ_M10-157_Chandra_Update.html
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Post by clone on Dec 1, 2010 14:32:37 GMT -8
NASA has an announcement to make that will impact the search for extraterrestrial life, but officials are staying mum until Thursday. Here's what they have to say so far: NASA will hold a news conference at 2 p.m. EST on Thursday, Dec. 2, to discuss an astrobiology finding that will impact the search for evidence of extraterrestrial life. Astrobiology is the study of the origin, evolution, distribution and future of life in the universe.blog.seattlepi.com/thebigblog/archives/230158.asp?from=blog_last3%3Cbr%3E
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Post by clone on Dec 2, 2010 10:10:37 GMT -8
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Post by clone on Dec 9, 2010 22:58:41 GMT -8
Critics raise doubts on NASA's arsenic bacteria December 9, 2010 After the findings were published in Science, other scientists began immediately to express their doubts at the conclusions of the paper, with some even expressing the opinion the paper should not have been published at all. One of the critics was Dr. Alex Bradley, from Harvard University, who blogged scienceblogs.com/webeasties/2010/12/guest_post_arsenate-based_dna.php that there were a number of problems with the research. Firstly, if arsenic had replaced phosphorus in the DNA the molecule would have broken into fragments when the DNA was placed in water, since the arsenic would have hydrolyzed, and yet it did not. .... Another critic was University of British Columbia biologist Rosie Redfield, who reviewed the paper on her blog, rrresearch.blogspot.com/2010/12/arsenic-associated-bacteria-nasas.html and has more recently submitted a letter to the journal. Among her conclusions are that the paper “doesn't present ANY convincing evidence that arsenic has been incorporated into DNA (or any other biological molecule).” She also writes: “If this data was presented by a PhD student at their committee meeting, I'd send them back to the bench to do more cleanup and controls.” www.physorg.com/news/2010-12-critics-nasa-arsenic-bacteria.html
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