Earthy Planets

An earth-sized planet has been discovered in one of our neighboring solar systems. Although it's not habitable, it reinforces the belief that there may be other planets in this star-system that could support life. Harvard astronomer Dimitar Sasselov is one of the leaders of the hunt for "super-earths."

Dimitar Sasselov on Astrobiology

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From the tiniest microscopic particles to some of the biggest structures on earth, the new science of astrobiology is leading the way to the discovery of life elsewhere in the universe.  Dimitar Sasselov explains why the creation of the world's first artificial cells will revolutionize lifeon our planet.

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