外星生命？ Nasa籠裏反

外星生物？NASA不挺自家人
(法新社)2011年3月8日 星期二 09:20

（法新社華盛頓 7日電） 美國 國家航空暨太空總署（NASA）一些頂尖科學家今天表示，並沒有科學證據支持科學家胡佛（Richard Hoover）的論點。胡佛宣稱他從掉到地球的殘餘隕石，找到外星生命的微小化石。

NASA正式和自家的科學家胡佛的論文脫勾，其論文於4日刊登在同儕評鑑期刊「宇宙學期刊」（Journal of Cosmology ），也可在線上免費閱讀。

NASA天體生物學研究所（Astrobiology Institute）主任皮契爾（Carl Pilcher）表示，胡佛所研究100-200 年前掉落在地球的隕石，已有多人經手過，「所以在隕石上發現微生物是可預期的」。

NASA位於華府的科學任務理事會（Science Mission Directorate）首席科學家赫茨（Paul Hertz）也發表聲明，表示NASA並不支持胡佛的研究。

他說：「除非經過同儕審查、或是經其他夠格的專家完整檢視，NASA才能支持1項科學論點或為其背書。」

他特別指出，胡佛的這篇論文2007年投稿到「國際天體生物學雜誌」（International Journal ofAstrobiology）後，還沒完成同儕審查的過程。

宇宙學期刊廣邀專家評估胡佛的論點，懷疑論者與支持者今天開始將他們的評論發表在期刊網站上。（譯者：中央社陳怡君）1
http://hk.news.yahoo.com/article/110308/8/n38p.html

NASA專家表示不支持發現外星生物化石的說法
2011年03月10日06:54
來源：人民網

　人民網洛杉磯3月8日電 （記者陳一鳴）針對美國宇航局（NASA）太空生物學家理查德·胡佛近日聲稱發現了外星生物化石的說法，NASA太空生物學會負責人卡爾·皮策爾8日在接受美聯社採訪時表示，“科學界和隕星分析界沒有人支持這一結論”。

　　NASA馬歇爾航天飛行中心太空生物學家理查德·胡佛日前說，他在對地球上僅存7塊的“CI1碳質球粒隕石”進行研究時，意外地發現了一種外星微生物化石。理查德·胡佛還強調，他認為“生命在宇宙間分布廣泛”。3月號的《宇宙學雜志》上刊登了胡佛的發現，但這一發現引起了科學界的極大爭議，該雜志已向5000名科學家和100位專家征求對該發現的看法。

　　NASA科學任務委員會首席科學家保羅·赫茲7日表示，他們沒有收到胡佛在《宇宙學期刊》發表的論文的評審報告。
http://world.people.com.cn/BIG5/1029/42355/14103928.html

美專家稱外星生命外表如細絲 地球生命源自外星
2011年03月08日08:28
來源：中國新聞社

　　中新網3月7日電 據香港《文匯報》7日報道，美國宇航局(NASA)科學家胡佛聲稱，發現可以解釋生命體如何形成的“外星生命”：它的外貌有如細絲，類似可追溯至逾40億年前太陽系之始的“藍綠菌”。他表示，如果研究屬實，那將証明生命體的存在比想象中廣泛，可以在外層空間生存並“殖民”於其它星球。

　　著份研究結果刊於3月份的《宇宙學》期刊上，並歡迎世界各地科學家挑戰他的結論。

　　據悉，NASA馬歇爾太空飛行中心太空生物學家胡佛10年來一直研究墜落全球不同角落的隕石上的細菌。他為了研究罕見的“CI1碳質球粒隕石”(CI1 carbonaceous chondrite)，遠征南極、西伯利亞和阿拉斯加，而地球上隻有9塊這樣的隕石。

　　隨后他以顯微鏡觀察隕石，發現許多不同細菌化石，大致分為兩種：一種極似在地球上找到的﹔另一種則完全“外星”。他認為，小行星將生命體在宇宙間散播，當隕石帶著細菌撞擊地球，細菌便在地球上發展成生命體。他堅稱，這些細菌不太可能在隕石墜落地球后才黏附上去。

　　胡佛提到，曾在隕石上發現一個體積和整體結構都與地球上巨型細菌titanospirillum velox相似的生命體。然而，他又曾發現一個沒含氮的細菌，而目前為止，在地球上所有生命體都含氮。他表示，這對眾多科學家來說仍然是個不解之謎。

　　胡佛早於2007年發表這個研究，但直至新聞報道才在近期引發廣泛報道。《宇宙學》期刊表示，這些發現具有爭議性，因此已發函給5000多名科學家，希望他們幫忙檢視這篇論文，並給予意見﹔而這個論述也有待進一步研究。　
http://env.people.com.cn/BIG5/14084884.html

美國宇航局科學家發現外星生命的證據
NASA scientist finds evidence of alien life
By: Andrew Couts •March 5, 2011
We are not alone in the universe, says NASA astrobiologist Dr. Richard B. Hoover. And he claims to have the extraterrestrial fossils to back it up.

Aliens exist, and we have proof.

That astonishingly awesome claim comes from Dr. Richard B. Hoover, an astrobiologist at NASA’s Marshall Space Flight Center, who says he has found conclusive evidence of alien life — fossils of bacteria found in an extremely rare class of meteorite called CI1 carbonaceous chondrites. (There are only nine such meteorites on planet Earth.) Hoover’s findings were published late Friday night in the Journal of Cosmology, a peer-reviewed scientific journal.

“I interpret it as indicating that life is more broadly distributed than restricted strictly to the planet earth,” Hoover, who has spent more than 10 years studying meteorites around the world, told FoxNews.com in an interview. “This field of study has just barely been touched — because quite frankly, a great many scientist [sic] would say that this is impossible.”

Hoover discovered the fossils by breaking apart the CI1 meteorite, and analyzing the exposed rock with a scanning-electron microscope and a field emission electron-scanning microscope, which allowed him to detect any fossil remains. What he found were fossils of micro-organisms (pictured below), many of which he says are strikingly similar to those found on our own planet (pictured above).
“The exciting thing is that they are in many cases recognizable and can be associated very closely with the generic species here on earth,” said Hoover. Some of the fossils, however, are quite odd. “There are some that are just very strange and don’t look like anything that I’ve been able to identify, and I’ve shown them to many other experts that have also come up stump.”

In order to satisfy the inevitable hoard of buzz-killing skeptics, Hoover’s study and evidence were made available to his peers in the scientific community in advance of the study’s publications, giving them a chance to thoroughly dissect his findings. Comments from those who decided to sift through the evidence will be published online, alongside the study.

“Given the controversial nature of his discovery, we have invited 100 experts and have issued a general invitation to over 5,000 scientists from the scientific community to review the paper and to offer their critical analysis,” writes Harvard-Smithsonian Center for Astrophysics scientist Dr. Rudy Schild, who serves as the Journal of Cosmology’s editor-in-chief. “No other paper in the history of science has undergone such a thorough vetting, and never before in the history of science has the scientific community been given the opportunity to critically analyze an important research paper before it is published.”

Needless to say, if Hoover’s conclusions are found to be accurate, the implications for human life will be staggering. Here’s hoping that he’s right.

Update: While the Journal of Cosmology says that “no other paper in the history of science has undergone such a thorough vetting,” some highly respected names in the scientific community are challenging the validity of Cosmology, and the findings of Dr. Hoover.

“[The Journal of Cosmology] isn’t a real science journal at all,” says PZ Meyers in Science Blogs, “but is the ginned-up website of a small group of crank academics obsessed with the idea of Hoyle and Wickramasinghe that life originated in outer space and simply rained down on Earth.”

So there you have it — this is either reality-altering news, or the work of kooks. Our hearts believe, but our brains are kind of bummed.

Edit: This article has been updated with an additional photograph and altered for clarity.
http://www.digitaltrends.com/international/nasa-scientist-finds-evidence-of-alien-life/