Evolution of the Moon

A very interesting perspective. Different kinds of craters results from the intersection of different size impacts and different geological conditions prevailing at the time .

I wonder if that first big meteor would have come in at that angle. Anyway, very cool animation.

More like this

(BTW: I find your claim that "the difference in the murder rates is explained by the different racial fractions in each city" rather strange, when Centerwall has shown that when household crowding is controlled for, black and white domestic homicide rates in Atlanta are
Pew has a nice survey up right now, A Closer Look at the Parties in 2008. Here are three questions, and the Republican - Democrat difference on the responses:
I have argued repeatedly that I don't think biological differences between men and women are sufficient to explain their different in representation in math and science (here,

GREAT! Now I want to see a similar movie showing the evolution of Earth.

Comment on the front page of scienceblogs:

Many of the moon's craters were formed 4 billion years ago on Greg Laden's Blog.

I didn't realize your blog had been around that long, Greg. :)