Wednesday, April 22, 2009

Smallest Earth-Like Planet Found

Astronomers claim to have discovered an exoplanet that is the most similar to Earth in terms of mass than any previously discovered.

Found in the constellation Libra, the planet known as Gliese 581 represents about twice the mass of Earth.

Astronomers have previously identified some 300 exoplanets, but most are much larger than Earth.

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