BROADCASTS.com

b'Earth\\u2019s southernmost active volcano may also be its most remote. Rosaly Lopes and Michael Carroll recently spent a few frigid days on the slopes of Antarctica\\u2019s Mount Erebus. What they learned may help us understand volcanos on other worlds. Emily Lakdawalla shows us stunning new, close-up images of Saturn\\u2019s rings. Bill Nye says a LightSail solar sail prototype has gone on display in a London museum. How could black holes help answer a space trivia contest question about Earth and Saturn? Also, an encore presentation of a visit with the late Gene Cernan, last astronaut to walk on the moon. Related links are here: http://www.planetary.org/multimedia/planetary-radio/show/2017/0123-lopes-carroll-erebus-volcano.html'