Conspiracy Theories from New Hampshire

A friend and colleague of mine, who I will refer to as "Mr. T from NH," has an interesting theory about NASA's upcoming Deep Impact comet research mission.

Now Mr. T likes to say that, "If you can remember the sixties, then you weren't really there." So that may give you some indications of the quality of this anonymous source.

But to get to the point, Mr. T wonders if the Deep Impact project isn't a trial run to attempt to obliterate a planet killing comet or asteroid.

Which leads to the question, does NASA know about a really big rock heading straight for us and they are just not telling us?

Where's Bruce Willis and a bunch of Oil Rig Drillers when you need them?