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06/13/2005:

"Earth's “Bigger Cousin” Detected"

Astronomers announced today the discovery of the smallest planet so far found outside of our solar system. About seven-and-a-half times as massive as Earth, and about twice as wide, this new extrasolar planet may be the first rocky world ever found orbiting a star similar to our own.

"This is the smallest extrasolar planet yet detected and the first of a new class of rocky terrestrial planets," said team member Paul Butler of the Carnegie Institution of Washington. "It's like Earth's bigger cousin."

Currently around 150 extrasolar planets are known, and the number continues to grow. But most of these far-off worlds are large gas giants like Jupiter. Only recently have astronomers started detecting smaller massed objects

"We keep pushing the limits of what we can detect, and we're getting closer and closer to finding Earths," said team member Steven Vogt from the University of California, Santa Cruz.
Full: www.space.com