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There might be an ocean on exoplanet TOI-270 d

Summary by EarthSky
View larger. | Artist’s concept of TOI-270 d, a sub-Neptune world about 73 light-years away. New analysis of data from the James Webb Space Telescope suggests there might be an ocean on exoplanet TOI-270 d. If so, TOI-270 d would be what scientists call a hycean world. Image via NASA. EarthSky’s 2026 lunar calendar is available now. Get yours today! Makes a great gift. TOI-270 d is a sub-Neptune exoplanet about 73 light-years from Earth. Scient…

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EarthSky broke the news in United States on Thursday, December 11, 2025.
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