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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