A collection of TED Talks (and more) on the topic of astronomy.
Video playlists about Astronomy
Way, way out there
Travel across the universe (or is it universes?) to see stunning images of Saturn's rings, hear haunting sounds from distant black holes and catch an infectious sense of wonder about galaxies far, far away.
Are we alone in the universe?
Is Earth really the only life-sustaining planet? These speakers think there might just be something or someone else out there -- and urge us to keep looking for it.