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  1. ... is very similar to our sun , around them, it is likely to have Earth-like ...attention the incident, more and more research scientists to join the ...

  2. 一.火星無可能撞地球.... 二.證據:科學家相信是一顆直徑約十公里的小行星撞擊地球,墨西哥的隕石坑是有力的證據.(有科學家指出一個在深海巨型隕石坑才是證據). 導致 ...

  3. ...' worse, scientists say the "runaway greenhouse effect...gas "sinks" were released into the atmosphere... in the ...

  4. Not exactly. We have found some rocks, which scientists suggested that they were originated from Mars and had some minerals ...

  5. ...time has also occupied scientists and technologists, and was a prime motivation in astronomy. Time... time in each day and in our lives. Units of ...

  6. ... to the big questions, why we are here. ) 2006-10-14 18:02:42 補充: Hawing...pneumonia because I think that it’s important for scientists to explain ...

  7. ...point that " why can't we just say that the universe just exist...without a cause ? " human mankind is differ from all other living...how ...

  8. ...presently continue to host life similar to our own, include the planets ...and d, recently discovered to be near Earth-mass extrasolar ... hypothetical ...

  9. ... is the only star we see during the daytime. The...across. It's center is about 15 million degrees ... is a small, rocky planet. Scientists thin ...