Monday, August 27, 2007

The universe's largest known planet.

PHOENIX, Arizona (AP) -- Scientists have discovered the universe's largest known planet, a giant ball made of mostly hydrogen that circles a star 1,400 light-years away.

An illustration of the new planet, called TrES-4, with its host star.

Scientists believe the planet is about twice the size of Jupiter, and has a temperature of 2,300-degrees.


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