Astronomy Cast 354: Comet Siding Spring vs Mars HD
Channel: astrospherevids
Date: 2014-12-22

This video is sponsored by XE.com 
and Swinburne Astronomy Online (http://astronomy.swin.edu.au/sao/)

We were witness to a once in a million year event. A close approach of Comet Siding Spring to the Planet Mars. And fortunately, humanity had a fleet of spacecraft orbiting the Red Planet, ready to capture this monumental event in real time. What did we see? What will we learn?