Technology
James Webb catches an exoplanet losing its atmosphere in real time
2026-01-20 08:01
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Astronomers have captured the most dramatic view yet of a planet losing its atmosphere, watching the ultra-hot gas giant WASP-121b for an entire orbit with the James Webb Space Telescope. Instead of a...
Astronomers have captured the most dramatic view yet of a planet losing its atmosphere, watching the ultra-hot gas giant WASP-121b for an entire orbit with the James Webb Space Telescope. Instead of a single stream of escaping gas, the planet is wrapped in two colossal helium tails—one trailing behind like a comet, the other stretching ahead toward its star.
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