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Gravity Assist

NASA’s interplanetary talk show, hosted by former Chief Scientist Jim Green, introduces you to space professionals working to take exploration into the future.

Gravity Assist: Season 5 Trailer – What’s Your Gravity Assist?
Season 3Episode 14Dec 10, 2019

Season 3, Episode 14: The Moon's Holy GRAIL

Recent maps of the Moon's gravity have taught us a lot about its overall shape, and have been invaluable for lunar exploration. Maria Zuber, principal investigator of the Gravity Recovery and Interior Laboratory (GRAIL) mission, reflects on the twin spacecraft and their implications for future investigations.

Season 3Episode 13Sep 27, 2019

Season 3, Episode 13: The Moon Quakes! With Walter Kiefer

Just like earthquakes help scientists figure out what's going on inside our home planet, moonquakes have taught scientists a lot about the interior of the Moon.

Season 3Episode 12Sep 12, 2019

Season 3, Episode 12: Fire Fountains on the Moon, with Dave Draper

Early in its history, the Moon was molten, with “fire fountains” erupting from its surface. How did the Moon cool down and become the quiet, cratered world we know today? NASA’s Chief Scientist Jim Green chats with NASA’s Deputy Chief Scientist Dave Draper about the Moon’s volcanic past and what we have learned from Apollo lunar samples.

Season 3Episode 11Aug 23, 2019

Season 3, Episode 11: The Moon Was Like a Magnet, with Sonia Tikoo

From lunar samples brought back in the Apollo program, scientists have figured out that the Moon once had a shield around it called a magnetosphere, just like the Earth has today. As NASA prepares to send humans to the Moon, and eventually on to Mars, scientists are exploring the Moon's magnetic past.