In this special Mother's Day episode, Michelle talks with her mom about what it was like raising a space-obsessed daughter in Wisconsin and watching her grow into a scientist.

Astronomer Michelle Thaller talks with Ashley Davies, a research scientist at the Jet Propulsion Laboratory, about the importance of volcanoes in the creation of Earth and how the study of volcanos in space can help us understand life here. Davies has journeyed to remote volcanos like Mt. Erebus in Antarctica and Erta Ale in Ethiopia as a way to help map volcanos like those on Jupiter's moons, Io and Europa, and in turn come that much closer to understanding how life began.

The most rare objects in the night sky are only visible in some extreme places. Dr. Michelle Thaller introduces us to Dr. Anna Moore, a scientist whose trips to Antarctica help us better understand the solar system.

Host Dr. Michelle Thaller talks to Prof. Lisa Randall, a theoretical particle physicist at Harvard, about her new book, Dark Matter and the Dinosaurs: The Astounding Interconnectedness of the Universe. The scientists explore what caused the dinosaurs' extinction and the role dark matter plays in the universe and our world.

Why are humans so quick to attribute unknowns to the work of aliens? Featuring guest Phil Plait, the "Bad Astronomer".