Friday, July 20, 2007

Astrochemistry - water detected on extrasolar planet

The first convincing evidence of water on a planet outside our solar system has been reported -- planet HD 189733b. Researchers using NASA's Spitzer Space Telescope were able to detect water absorption from starlight transmitted through the planet's atmosphere. HD 189733b is just over 60 light years from Earth. It is so close to its parent star in the constellation of Vulpeca the Fox that atmospheric temperatures on the planet can reach 1,200 K.

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