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Name: Alex A Cain
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Question:
With all of that stuff crashing into Jupiter, should we be afraid that it will happen to us too?



Replies:
Yes, it could happen to the Earth and certainly has happened in the past. There was a big explosion in Siberia about a hundred years ago that was due to a fairly small meteor or asteroid; There have been mass extinctions of much plant and animal life on the surface of the Earth that many scientists think were caused by an impact with a large meteor or comet (the dinosaurs 65 million years ago is the best known example). Many astronomers think we should be spending much money on discovering and tracking "near earth orbit" objects that might hit the earth someday. The problem is that most people do not want to spend money to keep us safe from something that MIGHT happen only once every million years.

Hawley


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