Study finds unexpectedly primitive atmosphere around warm Neptune

The atmosphere of the distant warm Neptune HAT-P-26b, illustrated here in an artist’s impression, is unexpectedly primitive, composed primarily of hydrogen and helium. By combining observations from the NASA/ESA Hubble Space Telescope and and the NASA Spitzer space telescopes, researchers determined that, unlike Neptune and Uranus, the exoplanet has relatively low metallicity, an indication of how rich the planet is in all elements heavier than hydrogen and helium.

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NASA/GSFC

About the Image

NASA press release
Id:goddard1701a
Type:Artwork
Release date:15 May 2017, 12:08
Size:4000 x 2255 px

About the Object

Name:HAT-P-26b
Type:Milky Way : Star : Circumstellar Material : Planetary System
Distance:450 light years
Category:Exoplanets

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