Carolyn Porco shares exciting new findings from the Cassini spacecraft's recent sweep of one of Saturn's moons, Enceladus. Samples gathered from the moon's icy geysers hint that an ocean under its surface could harbor life.
Mars Curiosity Rover Power Source (02:39)
NASA , Ashwin Vasavada
Why we need to go back to Mars (16:14)
TED , Joel Levine
Finding planets around other stars (04:24)
TED , Lucianne Walkowicz
Finding Habitable Worlds (05:10)
TED , Ariel Anbar
What If ET Is Out There? (18:37)
TED , Seth Shostak
The flower-shaped starshade that might help us detect Earth-like planets (06:38)
TED , Jeremy Kasdin
Mars: Dry Ice and Dunes (02:37)
NASA , Serina Diniega
Archeology from space (05:20)
TED , Sarah Parcak
Our next giant leap (15:28)
TED , Peter Diamandis
Seeking Signs of Past Mars Habitability (02:22)
NASA , NASA
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