Artist's Illustration of Clear Skies on Exoplanet HAT-P-11b

Artist's Illustration of Clear Skies on Exoplanet HAT-P-11b

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Fast Facts
News release ID: STScI-2014-42
Release Date: Sep 24, 2014
Image Use: Copyright
About this image

Scientists were excited to discover clear skies on a relatively small planet, about the size of Neptune, using the combined power of NASA's Hubble, Spitzer, and Kepler space telescopes. The view from this planet – were it possible to fly a spaceship into its gaseous layers – is illustrated at right. Before now, all of the planets observed in this size range had been found to have high cloud layers that blocked the ability to detect molecules in the planet's atmosphere (illustrated at left).

The clear planet, called HAT-P-11b, is gaseous with a rocky core, much like our own Neptune. Its atmosphere may have clouds deeper down, but the new observations show that the upper region is cloud-free. This good visibility enabled scientists to detect water vapor molecules in the planet's atmosphere.

Artwork, Exoplanets, Multimission, Planetary Atmospheres/Weather, Stars


NASA, ESA, and R. Hurt (JPL-Caltech)