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Study: Many mini‑Neptunes may have solid surfaces — an artist's rendering of a star and a planet
2 Dec 2025

Study: Many mini‑Neptunes may have solid surfaces

A University of Chicago study using JWST data and computer models finds many mini‑Neptunes might have solid surfaces instead of global magma oceans, because heavy atmospheres can create extreme pressure at the surface.

Photo by NASA Hubble Space Telescope, Unsplash

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