home *** CD-ROM | disk | FTP | other *** search
- Xref: sparky sci.astro:11683 sci.space:15381
- Path: sparky!uunet!charon.amdahl.com!pacbell.com!decwrl!elroy.jpl.nasa.gov!ames!data.nas.nasa.gov!taligent!apple!uuwest!max
- From: max@west.darkside.com (Erik Max Francis)
- Newsgroups: sci.astro,sci.space
- Subject: Re: Swift-Tuttle Comet a threat to earth?
- Message-ID: <wa9PTB6w165w@west.darkside.com>
- Date: 4 Nov 92 18:09:43 GMT
- References: <1992Nov2.180306.18471@netcom.com>
- Organization: The Dark Side of the Moon +1 408 245 SPAM
- Lines: 18
-
- sheaffer@netcom.com (Robert Sheaffer) writes:
-
- > But assuming that it is possible to fragment the nucleus of the comet,
- > this imparts a transverse velocity to the fragments that they did not
- > previously have. If they previously were exactly on the "right" path
- > to strike earth, by imparting motion to them along a right-angle to
- > that path, won't even a relatively small delta to their previous path
- > cause the vast majority of the fragments to miss earth?
-
- That's the idea. But if the asteroid is anything but tiny, it's going to
- take large amounts of energies, delivered at just the right places, to
- cause it to calve. And if you mess up, and the pieces still hit the
- Earth, they're going to be hitting even harder and over a wider area.
-
- ----------
- Erik Max Francis Omnia quia sunt, lumina sunt. Coming soon: UNIVERSE _ | _
- USmail: 1070 Oakmont Dr. #1 San Jose CA 95117 ICBM: 37 20 N 121 53 W _>|<_
- UUCP: ..!apple!uuwest!max Usenet: max@west.darkside.com 464E4F5244 |
-