Guest Benjamin Greenhagen, a planetary scientist at Johns Hopkins University’s Applied Physics Laboratory in Maryland, outlines the lunar surface’s remaining mysteries --- everything from permanently shaded regions at the North and South poles to near and far side impact craters. Greenhagen is the deputy principal investigator of the Diviner Lunar Radiometer instrument onboard NASA’s Lunar Reconnaissance Orbiter (LRO) and is an expert on the geology of the Moon’s surface.
Episode 27 --- Why Mars Went Wrong
Episode 26 --- How The Cold War Spurred The Earliest Days Of Interplanetary Exploration
Episode 25 --- Getting To Know Andromeda, Our Grand Spiral Neighbor
Episode 24 --- How Oxygen Transformed Our Planet Earth
Episode 23 --- China’s Space Agenda Gets Serious
Episode 22 --- The Far Future Of Our Universe (Turtles All the Way Down)
Episode 21 --- How Aircraft Propellers Drove The Aeronautical Revolution
Episode 20 --- The Case for a Lunar Science Moon Rush
Episode 19 --- The Trouble With Mercury: Our Solar System's Bizarre Innermost Planet
Episode 18 --- The Heyday of Flying by the Stars
Episode 17 --- How We All Got Here --- Galaxy Evolution over Cosmic Time
Episode 16 --- Deciphering Fast Radio Bursts (FRBs), arguably the most bizarre radio emissions ever detected.
Episode 15 --- Amelia Earhart Disappearance Is Likely Very Close To Being Solved
Episode 14 --- Does the Dwarf Planet Ceres Harbor Life?
Episode 13 --- Why Future Space-Based Arrays Of Optical Telescopes Will Likely Be 3-D Printed In Orbit
Episode 12 --- Understanding Potential Alien Technosignatures
Episode 11 --- Betelgeuse Dimming Mystery Might Be Solved, Says Edward Guinan
Episode 10 --- Why Mars Remains So Misunderstood
Episode 9 --- How ESA's GAIA Satellite Is Revolutionizing Our Understanding of the Milky Way
Episode 8 --- How NASA’s $10 Billion Webb Telescope Will Help Us Figure Out Our Own Solar System
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