Intro Astronomy 2013. Class 6: Mars (cont.), Asteroid Threat

Lecture 6 of Dr. Bruce Betts' 2013 online Introductory Planetary Science and Astronomy course covers Mars (continued: Phoenix, rovers Curiosity and Opportunity, including an update from Emily Lakdawalla of The Planetary Society, and moons), and the near Earth asteroid threat to Earth, including statistics, past impacts, and information on the recent 2012 DA14 flyby and Chelyabinsk fireball.  Recorded at California State University Dominguez Hills.