Season 3, Episode 12: Fire Fountains on the Moon, with Dave Draper
Early in its history, the Moon was molten, with \u201cfire fountains\u201d erupting from its surface. How did the Moon cool down and become the quiet, cratered world we know today? NASA\u2019s Chief Scientist Jim Green chats with NASA\u2019s Deputy Chief Scientist Dave Draper about the Moon\u2019s volcanic past and what we have learned from Apollo lunar samples.