Are The Moon's Mountains Due to A Cosmic Collision?

The shape and composition of the highlands region on the far side of our moon may be due to an ancient sticky collision with another smaller companion satellite, scientists report this week in the journal Nature. Planetary Scientist Erik Asphaug describes the evidence for an ancient cosmic collision.

Source: http://www.npr.org/2011/08/05/139025769/are-the-moons-mountains-due-to-a-cosmic-collision?ft=1&f=1007

bill clinton newt gingrich sarah palin al sharpton bill oreilly