NASA Telescopes Find Clear Skies and Water Vapor on Exo-Neptune

Astronomers using the Hubble, Spitzer, and Kepler space telescopes were able to determine that the exoplanet, cataloged HAT-P-11b, has clear skies and steamy water vapor in its atmosphere. The planet is about the size of Neptune. The results will appear in the online version of the journal Nature on 24 September 2014.

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