澳洲隕石鹼基確來自太空 我們可能都是外星人


14 Jun, 2008

法新社巴黎十三日電) 「地球與行星科學通訊」今天公佈的研究報告指出,澳洲隕石中發現的外太空基因物質,或許對地球生命的起源,扮演著重要作用。

  歐洲與美國科學家首度證實,隕石碎片中含有的兩種核鹼基,確實是外太空的物質。

  先前研究認為,這塊約於四十年前撞擊地球的隕石,可能在撞擊中遭到汙染。

  研究報告第一作者、英國倫敦帝國學院研究人員馬丁斯表示,找到的尿嘧啶與黃嘌呤這兩種分子,「都存在人體去氧核糖核酸(DNA)與核糖核酸(RNA)中」。

  RNA是構成人體的基因碼中,另一種重要組成。

  這些分子對於四十億年前左右,讓生命出現、且至今不知由來的神奇力量,也許是不可或缺的。

  馬丁斯接受「法新社」訪問時表示:「我們知道,許多與我們分析的穆契生隕石十分類似的隕石,三十八億至四十五億年前將建構生命的基礎材料帶到地球。」



洪 雪真

文章回應

 老師,我最近申請了科學園的帳號
我想申請您的課程
八下理化
我目前國中二年級
請老師給我課程密碼
謝謝
melia_wang_mia@yahoo.com.tw


melia_wang_mia - 09 Jun, 2010 - 23:47:22
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老師不好意思
你上次給我的密碼是九下的
可是我現在是國中八年級...
請問可以給我
八下的理化課程密碼
跟九上的理化課程密碼
八上的理化課程密碼 嗎

><謝謝wink

melia_wang_mia - 13 Jun, 2010 - 15:12:37
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雪真老師您好:

我是桃園縣立東興國中自然教師,日前因參加黃福坤教授演講,知道"科學園"這個有許多教師心血結晶課程分享的園地.因想要藉由向專業教師的學習,改進自己的教學,是否能請雪真老師開放參觀您的課程設計權限,謝謝!    祝  

             教學順利   一切平安!

                                                     洪慧怡

ps.我的e-mail:  tc44@m2k.dsjhs.tyc.edu.tw">tc44@m2k.dsjhs.tyc.edu.tw



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