Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!utgpu!water!watnot!watmath!clyde!rutgers!seismo!ll-xn!cit-vax!oddhack!jon
From: jon@oddhack.UUCP
Newsgroups: sci.bio,sci.astro
Subject: Re: Mass extinctions
Message-ID: <2331@cit-vax.Caltech.Edu>
Date: Mon, 13-Apr-87 17:54:11 EST
Article-I.D.: cit-vax.2331
Posted: Mon Apr 13 17:54:11 1987
Date-Received: Wed, 15-Apr-87 03:36:44 EST
References: <6760@alice.uUCp> <1489@kontron.UUCP> <1244@husc2.UUCP> <1510@kontron.UUCP> <2329@cit-vax.Caltech.Edu>
Sender: news@cit-vax.Caltech.Edu
Reply-To: jon@oddhack.Caltech.EDU (Jon Leech)
Organization: California Institute of Technology
Lines: 15
Keywords: sanity check
Xref: utgpu sci.bio:280 sci.astro:838

In article <2329@cit-vax.Caltech.Edu> fritz@polecat.Caltech.EDU (Fritz Nordby) writes:
>Assuming the creature was about as dense as water
>I work out that these creatures must have had a
>volume of >16500 cubic kilometers!
>That's a cube of more than 25 kilometers on a side.

	Whoops, forgot to mention: asteroids are quite a bit denser than
water (~3x for silicates), and there are quite a few bodies of this size
floating around in any case, although the number of Earth-crossers this 
big is very small (fortunately). There are probably comet nuclei this
big, also.

    -- Jon Leech (jon@csvax.caltech.edu || ...seismo!cit-vax!jon)
    Caltech Computer Science Graphics Group
    __@/