Re: Deep Impact

Anton Sherwood (
Thu, 12 Mar 1998 20:14:12 -0700

> Michael Mealling wrote:
> > We really need to know its velocity in a bad way. A slow asteroid hitting
> > wouldn't be to bad. A fast one would be very bad...

Michael Lorrey wrote:
> Even if its relavit velocity is less than a few hundred miles per hour, if it were
> on an intercept course, the earth's gravity as it approached would accelerate it
> to the point that it would be traveling at around 25,000 mph when it hit.

The question, rather, is how much its velocity (or rather its orbital
kinetic energy) can *add* to that.

"How'd ya like to climb this high without no mountain?" --Porky Pine
Anton Sherwood   *\\*   +1 415 267 0685
!! visiting New Mexico, end of March !!