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Polar View of GJ 436b System
This artist's diagram shows a polar view of the GJ 436 system. The warm, Neptune-sized exoplanet GJ 436b resides very close to its star – less than 3 million miles – and whips around it in just 2.6 Earth days. A huge, comet-like cloud of hydrogen nicknamed "The Behemoth" is shown bleeding off of the planet and trailing it like the tail of a comet. The planet is just 30 light-years from Earth.
- Release DateJune 24, 2015
- Science ReleaseHubble Sees a ‘Behemoth’ Bleeding Atmosphere Around a Warm Neptune-Sized Exoplanet
- Credits
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Artist's Concept of Extasolar Planet GJ 436b
This artist's concept shows "The Behemoth," an enormous comet-like cloud of hydrogen bleeding off of a warm, Neptune-sized planet just 30 light-years from Earth. Also depicted is the parent star, which is a faint red dwarf named GJ 436. The hydrogen is evaporating from the...
Photometry of Transiting Planet GJ 436b
This artist's diagram shows the unusual light curve produced when the exoplanet GJ 436b and the huge, comet-like hydrogen cloud nicknamed "The Behemoth" pass in front of the parent star. Because the planet's orbit is tilted nearly edge-on to our view from Earth, the planet and...
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Last Updated
Feb 17, 2025
Contact
Media
Claire Andreoli
NASA’s Goddard Space Flight Center
Greenbelt, Maryland
claire.andreoli@nasa.gov
