Exoplanets: Distant Worlds

Extrasolar planet discoveries raise the possibility of other earth-like worlds.

Exoplanets: Distant Worlds

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This artist's impression shows the red dwarf star CHRX 73 (upper left) and its companion CHRX 73 B in the foreground (lower right). CHRX 73 B is one of the smallest companion objects ever seen around a normal star beyond our Sun. Astronomers have yet to determine if the object is a planet or a failed star. (NASA, ESA and G. Bacon)
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