Water Vapor Discovered on Nearby Alien Planet

Tau Bootis B

Have you ever heard of the exoplanet, Tau Boötis b?  Well, it was discovered back in 1996 and is one of the closest exoplanets to us.   Tau Boötis b is about 51-light-years away and is considered to be a “hot Jupiter” because it is a gas giant orbiting close to its parent star.  Now, with the advances in techniques used to scan planetary atmospheres, something else has been discovered about  Tau Boötis b:  the fact that it has water vapor.

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