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Scientists have developed a better model to understand "steam worlds," which are planets smaller than Neptune and larger than Earth that are too hot to have liquid water at their surface and thus have ...

Astronomers using the James Webb Space Telescope have uncovered a distant world that looks and behaves nothing like the familiar spheres of our own Solar System. Sculpted into a stretched, lemon-like ...

This animation shows an exotic exoplanet orbiting a distant pulsar, or rapidly rotating neutron star with radio pulses. The planet, which orbits about 1 million miles away from the pulsar, is ...