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Hubble Observes Atmospheres of TRAPPIST-1 Exoplanets in the Habitable Zone

Astronomers using the Hubble Space Telescope have conducted the first spectroscopic survey of Earth-sized planets in the TRAPPIST-1 system’s habitable zone. Hubble reveals that at least the inner five planets do not seem to contain puffy, hydrogen-rich atmospheres similar to gaseous planets such as Neptune. This means the atmospheres may be more shallow and rich in heavier gases like carbon dioxide, methane, and oxygen.
  • Release Date
    February 5, 2018
  • Science Release
    Hubble Probes Atmosphere of Exoplanets in TRAPPIST-1 Habitable Zone
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  • Credit
    NASA's Goddard Space Flight Center and K. Jackson; Music: "Deep Groove" by Danny McCarthy [ASCAP] and Thomas Dill [ASCAP]; Soundcast Music SESAC; Chronic Trax; Killer Tracks Production Music

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Last Updated
Mar 28, 2025
Contact
Media

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

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