[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]

RE: Giant Impact Near India -- Not Mexico -- May Have Doomed Dinosaurs





On Fri, 16 Oct 2009, evelyn sobielski wrote:

Who would have thought it? Two giant asteroids
hitting the planet at
the same time. What are the odds?

That is an excellent question.

More like "close in time"...?

Actually, "at nearly the same time" is far more likely than "close in time"..

We're talking geologically here, tho, and that sounds like a lot of lee way...

What comes down are unspecified bolides. What they were *in outer space* - a comet, several asteroids, or a single asteroid that later broke up - is not that important.

And indeed, the odds of two extraterrestrial bodies impacting in short succession are really really low since about as long as Earth had a solid crust.. The odds of an asteroid (especially one of uneven shape) above a certain size causing, within 24 hours or so, *more* than one chunk large enough to cause mass destruction to impact are about 1, however.