Intro Astronomy 2013. Class 5: Venus (cont.), Mars

Lecture 5 of Dr. Bruce Betts' 2013 online Introductory Planetary Science and Astronomy course covers Venus (continued: surface landers, exploration), and Mars (characteristics, many types of geologic features, poles, exploration spacecraft: flyby, orbiters, and landers/rovers).  Recorded at California State University Dominguez Hills.