NASA宣布發現新的生命形式



不久前大家應該還有印象,NASA說要召開全球的重要記者會,大家都以為是證實外星人存在之類的消息。今天又來了,宣布在台灣時間凌晨2點(2010.12.3)公布新的發現,NASA宣稱這是「一項天體生物學發現」(an astrobiology finding)


好啦,晚睡的鳥兒也是有蟲吃的,消息已經出來了。簡單來說,NASA科學家宣稱發現了一種全新的生命形式。一種靠砷(砒霜)也能存活的堅韌細菌DNA。

以往科學家認為,生命需要存活,必須一個星球擁有一些必要的條件。如原始的地球大氣含有磷的存在,所以以此推測,其他的星球也應該要具備類似的條件。

科學家認為,地球上所有生命是由六個部分組成:包含碳,氫,氮,氧,磷和硫。從最小的變形蟲到最大的生物,都是具備類似的生物DNA特質。但是這新發現的細菌證明,生命的存活未必如此。換言之,的確有可能存在我們想像之外的生物。

好啦,今天的NASA會議就是這樣。



NASA has discovered a completely new life form that doesn't share the biological building blocks of anything currently living in planet Earth. This changes everything. Updated.

At their conference today, NASA scientist Felisa Wolfe Simon will announce that they have found a bacteria whose DNA is completely alien to what we know today. Instead of using phosphorus, the bacteria uses arsenic. All life on Earth is made of six components: carbon, hydrogen, nitrogen, oxygen, phosphorus and sulfur. Every being, from the smallest amoeba to the largest whale, share the same life stream. Our DNA blocks are all the same.

source: http://gizmodo.com/5704158/nasa-finds-new-life


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