So far, scientists have found planets in distant star systems-- over 800 confirmed to date. Now, however, they are announcing the discovery of a planet in the Alpha Centauri system. Right next door.
The new world is slightly more massive than Earth and orbits Alpha Centauri B in 3.2 days. Astronomers think its surface is so hot it could be molten lava. However, where there's one rocky world, there may be others.
Alpha Centauri is, in fact, a triple star system, with A and B-- B is a sunlike star-- and Proxima Centauri, which is the single closest star to the Sun. The whole system is 4.3 light years from Earth. Astronomers now think there's a possibility that Earthlike worlds could exist in the habitable zones of the system. If such a world, or worlds, exists, the public reaction could easily result in a more robust space program.
Wednesday, October 17, 2012
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