Earth’s 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’s Mount Erebus. What they learned may help us understand volcanoes on other worlds. Emily Lakdawalla shows us stunning new, close-up images of Saturn’s 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.
- Antarctica’s Mount Erebus
- Antarctica Expeditions Focus on Leadership, Landscape and Art
- Wings WorldQuest Flag Carriers
- At Spacefest VI With Apollo Astronaut Gene Cernan and a Host of Proud Space Geeks
- Amazing photos of tiny moons as Cassini orbits among the rings
- LightSail at Science Museum, London
- Michael Carroll
- Rosaly Lopes
This week's prizes are a lovely Planetary Radio t-shirt, now available in both men’s and women’s styles. Also, a 200-point iTelescope.net astronomy account, and a Planetary Society rubber asteroid.
This week's question:
What solar system moon is closest in size to Mercury?
To submit your answer:
Complete the contest entry form at http://planetary.org/radiocontest or write to us at [email protected] no later than Tuesday, January 31st at 8am Pacific Time. Be sure to include your name and mailing address.
Last week's question:
Approximately how wide is the combined, complex caldera of Olympus Mons, the Martian volcano?
The answer will be revealed next week.
Question from the week before:
Approximately how many squished-up Earths would fit inside Saturn?
You could squish about 764 Earths into a hollowed-out Saturn. Ah, but how many Earth mass black holes? Answer is in the show.