[Mitchell]

I did a little more research on this, and it turns out that there's quite a bit of uncertainty in the date. NASA says it occurred sometime between 50,000 and 20,000 years ago. See this page at the JPL Near-Earth Object Program. That web page also gives 80 feet as the diameter of the object that hit, a little smaller than 100-meter figure from the other website I quoted above.

Thanks for bringing this out.

[Mitchell]

That web page also gives 80 feet as the diameter of the object that hit, a little smaller than 100-meter figure from the other website I quoted above.

Whoops -- that should have been "a lot smaller".

[blam]

Thanks to you too. I checked it out myself some time back because of my interest in anthropology. I was wondering if this event had been witnessed by humans. ( I think yes, regardless if it was 20k or 50k years ago.)