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- Path: sparky!uunet!haven.umd.edu!darwin.sura.net!newsserver.jvnc.net!princeton!lyman!bscott
- From: bscott@lyman.pppl.gov (Bruce Scott)
- Newsgroups: sci.astro
- Subject: Re: Toutatis Captured by Radar Images
- Message-ID: <1551@lyman.pppl.gov>
- Date: 25 Jan 93 22:15:09 GMT
- References: <20JAN199301453454@kelvin.jpl.nasa.gov> <schumach.727766698@convex.convex.com> <1993Jan23.183636.7525@sfu.ca> <schumach.727847250@convex.convex.com> <1993Jan24.184001.22930@sfu.ca>
- Reply-To: bscott@lyman.UUCP (Bruce Scott)
- Organization: Princeton University, Plasma Physics Laboratory
- Lines: 27
-
- palmer@sfu.ca (Leigh Palmer) writes:
-
- >I think the most persuasive arguments against the exploded (or collided)
- >planet hypothesis were aesthetic rather than scientific. Catastrophism
- >was "out" for a while, probably because of distaste engendered by one of
- >its proponents (Velikovsky). Luis Alvarez put catastrophism back into
- >favor with his identification of the K-T boundary mechanism, and it is,
- >perhaps, timely for the exploded planet hypothesis to reemerge into a
- >more sypathetic community.
-
- Actually, one important reason why people turned against the exploding
- planet hypothesis was the discovery that certain classes of asteroids have
- compositions which are not consistent with any scenario which involves
- heating above 300 K. This and the fact that the property classes
- (achondrite, C1 and C2 chondrite, enstatite, etc) are on isotopic grounds
- irreconciliable with any single parent body are the reasons J S Lewis
- argues against it.
-
- The best review I know of is where I got this:
-
- J S Lewis and R G Prinn, Planets and their Atmospheres: Origin and
- Evolution, Academic Press, 1984.
- --
- Gruss,
- Dr Bruce Scott The deadliest bullshit is
- Max-Planck-Institut fuer Plasmaphysik odorless and transparent
- bds at spl6n1.aug.ipp-garching.mpg.de -- W Gibson
-