Re: Deep Impact

Hal Finney (
Thu, 12 Mar 1998 08:42:01 -0800

One thing may be misleading about this discovery. The fact that we get
30 years' notice is not something we can typically expect.

It's entirely possible that a dinosaur killer (which could be considerably
smaller than 1997XF11) will appear with virtually no notice. We don't
have the ability to constantly monitor space for potential threats.