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Nearby Super-Earth K2-18 B May Be a Water-Rich Ocean Planet: 'This Has Certainly Increased the Chances of Habitability'

Summary by Space
The search for life beyond the solar system is heating up. Though biosignatures around super-Earth K2-18b remain unconfirmed, the JWST has found the planet could be a water-rich ocean world.

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Earlier this year, astronomers reported possible evidence of life on another planet – but new JWST observations suggest that the apparent biosignature is not there after all The impression of an artist of the exoplanet K2-18B The hopes of finding extraterrestrial life on planet K2-18B quickly fade, as [...]

For several years, the exoplanet “K2-18b” has been considered one of the most promising candidates for life outside the solar system; however, recent expert studies have denied that possibility. Located 120 light years from Earth, in Leo’s constellation, this distant world seemed to have everything: water, an atmosphere rich in hydrogen, as well as a habitable area around its star; so it was also known as the “Earth’s Twin.” K2-18b, the planet t…

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IFLScience broke the news in on Wednesday, July 30, 2025.
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