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Artist’s Illustration of Gas Streaming from GJ 3470b

Artist's Illustration of Gas Streaming from GJ 3470b
This artist's illustration shows a giant cloud of hydrogen streaming off a warm, Neptune-sized planet just 97 light-years from Earth. The exoplanet is tiny compared to its star, a red dwarf named GJ 3470. The star's intense radiation is heating the hydrogen in the planet's upper atmosphere to a point where it escapes into space. The alien world is losing hydrogen at a rate 100 times faster than a previously observed warm Neptune whose atmosphere is also evaporating away.
  • Release Date
    December 13, 2018
  • Science Release
    In Search of Missing Worlds, Hubble Finds a Fast Evaporating Exoplanet
  • Credits
    NASA, ESA, and D. Player (STScI)

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Details

Last Updated
Mar 07, 2025
Contact
Media

Claire Andreoli
NASA’s Goddard Space Flight Center
Greenbelt, Maryland
claire.andreoli@nasa.gov