Planetary astronomers have found not one but *two* small, rocky planets that seem very similar to Earth. Michio Kaku discusses why this is so very significant, and what further qualities about these planets we're hoping to discover.
Channels: Interviews Organic Chemistry Astrophysics
Tags: Big Think Michio Kaku new planets astronomy life water oceans
Uploaded by: layne.ransom.5 ( Send Message ) on 09-12-2012.
Duration: 4m 11s