Where are the Galactic empires?
20 Jan 2012, 20:05 UTC
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In an investigation of the Fermi Paradox, a model created by two mathematicians at Florida Gulf Coast University of expansion of a civilization into galactic space indicates that the Milky Way should be teaming with interstellar empires even under very conservative estimates of expansion rates: Extraterrestrial intelligence: Lonely planet - The Economist - Jan.19.12 (via spacetoday.net).
The Economist also provides this habitability index, which I hope they will maintain as new exoplanet data comes in, for known bodies in the solar system and around other stars: Daily chart: Life on Mars (and elsewhere) - The Economist.
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