Scientists skeptical of meteorite alien life claim (AP)

Monday, March 7, 2011 5:01 PM By dwi

WASHINGTON – The gaps and lean fibers in these expanse rocks trusty countenance same bacteria, and a NASA individual has caused a stir with claims that they're fossils of outlander life. But as NASA create 15 eld ago, looks crapper be deceiving.

Top scientists in different disciplines directly create pitfalls in a new publicised examination of threesome meteorites that went viral on the Internet over the weekend. NASA and its crowning scientists disavowed the impact by hour Monday.

Biologists said meet because it looks as though the holes were made by bacterium doesn't attain them fossils of outlander microbes. The meteorites could be riddled with Earthly contamination. And both astronomers and biologists complained that the conceive was not genuinely reviewed by peers.

There are questions about the credentials of the study's author, Richard Hoover. And the impact appeared in an online book that raises eyebrows because modify its application acknowledges it may hit to closed downbound in June and that digit reason for publishing the disputable claim was to help find a buyer.

"There's a aggregation of clog there, but not a aggregation of science," said Rosie Redfield, a microbiologist at the University of nation Columbia, who publically compound the paper over the weekend. "I looked at it and shuddered."

The Associated Press talked to a dozen scientists, and hour of them agreed with the findings. There was hour of the fervour that surrounded a kindred claim that NASA declared with fanfare in 1996 — but was unnatural to backwards away from later — that a meteorite from Mars create in continent showed grounds of outlander life.

"There has been no digit in the technological community, sure no digit in the meteorite psychotherapy community, that has supported these conclusions," NASA Astrobiology Institute Director Carl Pilcher said weekday of the latest work.

Hoover, of NASA's histrion Space Flight Center in Huntsville, Ala., claims he create fossils that countenance same remnants of bacterium in a containerful of meteorites. His research, publicised online weekday in the Journal of Cosmology, concludes these must hit become from outmost space. It is supported on threesome specimens of a rare type of meteorite — intellection to become from comets — create in author in 1806 and 1864 and Tanzania in 1938.

Hoover's pictures countenance same atomlike versions of flattened tubes and foul strings.

Hoover didn't convey phone calls or e-mails from the AP.

Rudy Schild, a altruist astronomer and editor-in-chief of the journal, said the conceive was reviewed by scientists, but he wouldn't identify them. Schild said the intent was to garner tending and create debate, which happened after it was prototypal reported over the weekend by FoxNews.com.

"We intellection the purpose of the exercise here is having it released and having it discussed," Schild told the AP. He recognized the journal's close demise was "a bourgeois in play, but there are added factors as well" in the decision to publicize Hoover's research.

The year-and-a-half-old book champions a disputed theory that chronicle started elsewhere in the universe and was seeded on Earth by asteroids and comets.

Schild said criticisms of Hoover's paper "are legitimate" but that he agrees with Hoover's conclusion.

Other scientists say Hoover, who has worked for NASA in solar physics but today bills himself as an astrobiologist, doesn't hit the comely expertise. "Anyone crapper call himself an astrobiologist. That doesn't attain it so," said Pilcher, the biology create director.

And patch Hoover's paper in the book lists him as a "Ph.D.," NASA's solar physics website does not mention a doctorate. A associate of Hoover's said he acknowledges that he doesn't hit the modern degree. Schild said someone at the book — he doesn't undergo who — may hit unknowingly listed attorney with the doctorate title.

Top international scientists, including those who conceive meteorites, are at a word in Houston this hebdomad and this was the talk — albeit mostly in a can-you-believe-this-stuff way, said Harry "Hap" McSween, digit of world's best experts in meteorites.

"I don't conceive anybody accepts this idea," McSween said. "Nobody thinks they are extraterrestrial."

McSween has studied digit of the meteorites cited — the digit that fell to author in 1864. He said it was in "atrocious" information at a Paris Museum with noticeable contamination. There was a vein in the rock that hadn't been there in older photographs, a clew of creeping moisture. That makes sense because modify NASA moon rocks, hermitically stored, hit been contaminated with Earthly microbes, he said.

McSween and added scientists said they had hoped the open would ignore reports about the study, but they didn't. It was on the crowning of character News such of Monday.

"It looks same it's category of viral," McSween said. "It's outlander life, that's why."

For individual Redfield, it was meet added housing of a individual who's not a individual tinkering in a field he doesn't know.

One of the prototypal rules for biologists is meet because digit thing looks same added doesn't stingy the two things are the same, she said.

"These guys attain whatever dopy announcement completely ignoring every the rules of biology and then intend every the publicity," Redfield said.

For McSween and Redfield it's deja vu. McSween criticized the 1996 discovery, which had been declared by then-President Bill politico on the White House south lawn. Over the years, individual after individual chipped away at the basis of that Mars meteorite uncovering and today it's not mostly accepted as grounds of outlander life.

And that conceive had stronger person review and more supporting lines of evidence, Redfield and McSween said.

Seth Shostak, an astronomer who searches for nimble outlander life, desperately desired to conceive the reports. But when he feature the attorney study, he ended up disappointed.

"It looks very, rattling doubtful, which is a dishonor from individual points of view," said Shostak, a grownup individual at the SETI Institute in California. "But that's the artefact power is. People attain claims that ofttimes don't hold up. That's the nature of science."

___

Online:

The Journal of Cosmology paper: http://bit.ly/eFOppL

NASA's Astrobiology Institute: http://astrobiology.nasa.gov/nai/


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