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    JWST Reveals Powerful Winds and Dense Atmosphere on Scorching Exoplanet TOI-561b

    1 day ago

    Astronomers using NASA’s James Webb Space Telescope have found compelling evidence that TOI-561b, an ultra-hot rocky exoplanet orbiting its star every 11 hours, still retains a dense atmosphere. Temperatures measured on both its day and night sides are far lower than expected for a bare rock, implying powerful winds and efficient heat transport. The discovery challenges existing theories of planetary evolution and suggests magma oceans may help replenish atmospheres even under extreme stellar radiation.

    Astronomers using NASA’s James Webb Space Telescope have found compelling evidence that TOI-561b, an ultra-hot rocky exoplanet orbiting its star every 11 hours, still retains a dense atmosphere. Temperatures measured on both its day and night sides are far lower than expected for a bare rock, implying powerful winds and efficient heat transport. The discovery challenges existing theories of planetary evolution and suggests magma oceans may help replenish atmospheres even under extreme stellar radiation.
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