dinosaur killer asteroid possibly traced back to specific belt asteroid collision
I was going to blog this - Bottke et al Nature paper last week (sub) tracing the K-T impactor to a specific disruption of the ~ 170 km diameter parent body of the carbonaceus chondrite asteroid Baptistina.
They also suggest we've been in a impact maximum over the last 100 million years or so, because of the shower - a factor of two above long term average for sizable (1 km) impactors.
They argue the Tycho crater on the Moon came from the same event.
Interesting, might be right.
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"Every man is free to rise as far as he's able or willing, but the degree to which he thinks determines the degree to which he'll rise." -Ayn Rand
I recently got this comment of incredulity on my article about what wiped out the dinosaurs?
Remember that asteroid that was supposed to pass harmlessly by the Earth on Sunday? Well, things didn't go exactly as planned...
The Drake Equation is that famous equation where you count how many stars there are, figure out the chance of a star having planets, of planets having water, etc. etc. until finally you get some rough estimate of the chance of live evolving elsewhere in the universe.