How impact craters are formed
This sounds a bit like a no-brainer really; the asteroid or comet crosses the path of Earth and hits the Earth's surface causing an impact crater. That's it isn't it? No, nothing in life is quite as simple as that ...
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Best Of The Week Podcast- The History Of The Search For Extraterrestrial Life (SETI)
Posted on November 18th, 2009 No commentsThe story and history of SETI the search for extraterrestrial intelligence. The ups and downs of the alien search with Frank Drake and a few critics.
