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US astronomers said Wednesday they have discovered an Earth-sized planet that they think might be habitable, orbiting a nearby star, and believe there could be many more planets like it in space.

The planet, found by astronomers at the University of California, Santa Cruz, and the Carnegie Institution of Washington, is orbiting in the middle of the "habitable zone" of the red dwarf star Gliese 581, which means it could have water on its surface.

Wonderful news, but stating that there "could be many more planets like it" is an understatement.  It's virtually a certainly that there will be many planets more like it.   To read the rest of the article, click here.