Hubble Finds Water Vapor On Distant Exoplanet

  • Released Wednesday, September 11th, 2019
  • Updated Wednesday, May 3rd, 2023 at 1:45PM

With data from the Hubble Space Telescope, water vapor has been detected in the atmosphere of a super-Earth within the habitable zone of its host star.

K2-18b, which is eight times the mass of Earth, is the only planet orbiting a star outside the solar system (or “exoplanet”) within the habitable zone.

For more information, visit https://nasa.gov/hubble.

Credit: NASA's Goddard Space Flight Center
Paul R. Morris (USRA): Lead Producer

Music credits: "Only Human" by Guillaume Bernard [SACEM]; Universal Production Music

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NASA's Goddard Space Flight Center


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