🚀 go-pugleaf

In article <6101@nfs4.rl.ac.uk> kgd@inf.rl.ac.uk (Keith Dancey) writes:
>My understanding is that the demise of the dinosaurs extended over a period
>of order of magnitude of a thousand years.  Certainly long enough to place
>doubt upon the viability of a single catastrophy such as the one mentioned.
>If the palaeontological evidence is not contradicted (and I have understood
>it correctly) then a *series* of such catastrophic strikes would be required.
> 
>That is not say a single catastrophy is ruled out, but it looks as though
>its effects must be longer-lived than a few years.

	There is some belief that a gravitational perturbation of the
cometary cloud could produce "showers" of comets in the inner solar system.
Don't take "showers" too literally - it means a handful of hits over
long periods of time - but this has some bearing on your comments.

	Yow! Get off the net for two weeks, come back to 600 articles in
sci.space. :-)

	Jon Leech (leech@apple.com)
	Apple Integrated Systems, San Jose
	__@/