It’s likely that our Moon emerged from a giant collision between Earth and a body the size of Mars. But getting that story, or any other, to fully square with the evidence has proven difficult.
The crack patterns in dried mud, permafrost, and lava columns exhibit subtle variations on simple physics.
SPS Movie Nights
Time and location: 8:00pm in the Bianchi Planetarium
(north of the science buildings, across from the Student Union.)
Next movie: TBD (Fall 2011)