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- The NASA Constellation Program Podcast
Posted on September 23rd, 2009 No commentsAll about the constellation space programme. If you read my blog post recently then you will know quite a lot but it is always good to know more!
By Astronomy cast
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