Anyone else worried about "Deep Impact" collision with comet? [View All]

NASA just launched the Delta rocket with the Deep Impact crafts. "Impactor" is to slam into a comet in July, while "Flyby" watches.

"The interesting part of this mission is that we don't really know what to expect," said Don Yeomans, a senior research scientist with the Deep Impact mission at NASA's Jet Propulsion Laboratory, JPL. "But no matter what happens, we'll observe the phenomena."

I just heard on CNN that the Impactor will make a hole in the comet structure the size of the Roman Colisseum.

Uhhh ... if they really don't know what to expect, doesn't that mean they don't know whether impact with a comet won't cause something to go flooey, and send some component of the comet hurtling toward Earth or the Sun or some other planet? Can't help it ... this makes me nervous. I mean, the comet's just sittin' there, being dust and ice with a gassy tail, minding its own business ... and we go up there to blow a big hole in the works ...

Then again, the Earth probably won't survive four more years of Dubya, so what am I worrying about?