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Astronomy & science · first seen 26 Aug, updated 26 Aug

JWST detected the signature of water while the rocky exoplanet GJ 486 b crossed its star, raising hopes of a steam-rich atmosphere just 26 light-years away. But cool patches on the star can imitate exactly the same signal—and follow-up observations now suggest the planet is probably airless.

1 outlet James Webb Space Telescope

NIRSpec found a water-shaped transit signal at GJ 486 b, but two MIRI eclipses measured a nearly bare-rock dayside, making cool stellar patches the stronger explanation. The post JWST detected the signature of water while the rocky exoplane…

Summary from SpaceDaily.

Coverage 1 article · 1 outlet

  1. SpaceDaily
    JWST detected the signature of water while the rocky exoplanet GJ 486 b crossed its star, raising hopes of a steam-rich atmosphere just 26 light-years away. But cool patches on the star can imitate exactly the same signal—and follow-up observations now suggest the planet is probably airless.