NASA - Deep Impact

A real life "Deep Impact" mission to a commet can be found here: NASA - Deep Impact. Unlike the Hollywood movie by the same name, where Robert Duvall pilots a modified space shuttle full of astronauts to a commet on a collision course with earth, the "Deep Impact" mission will make contact with the comet on the Fourth of July, and will be made up of unmanned space craft.

Also unlike the movie, which attempted to blow-up a comet using nuclear warheads, the NASA Deep Impact space craft will simply collide with the commet at a speed of approx. 6 miles per second. Though there are no explosive charges on the space craft, NASA believe it might make a crater as large as a sports stadium.

Very interesting....