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The Bruce Murray Space Image Library

GJ 436b

GJ 436b

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NASA/JPL-Caltech

GJ 436b
An artist’s impression of the Neptune-sized world GJ 436b. Measurements from Hubble and Spitzer indicate that this planet’s atmosphere is highly enriched in heavy elements, which is deeply puzzling; no theorist predicted the existence of a hydrogen-rich planet with such a large amount of heavy elements.

Learn more about this planet here.

Most NASA images are in the public domain. Reuse of this image is governed by NASA's image use policy.

Original image data dated on or about April 21, 2010

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