TED
Are we alone in the universe?
Is Earth really the only life-sustaining planet in existe
Andrew Connolly: What's the next window into our universe?
The flower-shaped starshade that might help us detect Earth-like planets | Jeremy Kasdin
Allan Adams: The discovery that could rewrite physics
Why our universe might exist on a knife-edge | Gian Giudice
Carolyn Porco: Could a Saturn moon harbor life?
What if ET is out there?: Seth Shostak at TEDxSanJoseCA
Penelope Boston: Life on Mars? Let's look in the caves
Freeman Dyson: Let's look for life in the outer solar system
Jill Tarter: Why the search for alien intelligence matters
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