Earth is “The Privileged Planet”

Another new planet is found:
http://www.uni-heidelberg.de/presse/news2015/pm20150212_heidelberg-astronomers-discover-rare-planet.html

The book “The Privileged Planet” showed a great number of reasons to consider the Earth as unique in the solar system and the sun and its location in the galaxy as unique also. Earth is “optimized” for a combination of #1 life support, #2 intelligent life support, and #3 observability to the universe.

AU is just right (Goldilocks zone), gravity, transparent atmosphere, biosphere, crust and core composition, lots of water, axis tilt for seasons, one big moon for the change in tides, protection from interstellar objects by the solar system’s outer gas giants, Goldilocks region in the galaxy on a spiral arm… …all these things just right.

No exoplanet is as “rare” as the Earth.

Privileged Planet web site:
http://www.privilegedplanet.com/

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