Worlds Away: Astronomers Begin to Uncover Nearby "Super-Earths"

A clone of Earth, or even a rough approximation, has proved a difficult thing for scientists to find. The catalogue of planets orbiting other stars grew to more than 400 entries in October , but the goal that drives much of the research into extrasolar planets, or exoplanets, is the discovery of a habitable world, and that goal remains unmet. Some rough approximations, however, are starting to come into view. [More]

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