Astronomer Dimitar Sasselov and his colleagues search for Earth-like planets that may, someday, help us answer centuries-old questions about the origin and existence of biological life elsewhere (and on Earth). How many such planets have they found already?

alt : http://feedproxy.google.com/~r/TEDTalks_video/~5/U8LRYAqI6IY/DimitarSasselov_2010G.mp4http://feedproxy.google.com/~r/TEDTalks_video/~5/U8LRYAqI6IY/DimitarSasselov_2010G.mp4

Excerpt from:
Dimitar Sasselov: How we found hundreds of Earth-like planets – Dimitar Sasselov (2010)

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