Far beyond the eight familiar planets in our solar system, countless bizarre and extreme worlds await discovery — and some ...

Scientists discovered that methyl halides, a gas produced by microbes, could be a biosignature for life on distant planets.

New research published in The Astronomical Journal suggests another explanation for these strange worlds, and they might mirror a planet in our own system. Don't Miss: Today’s deals: $399 iPad ...

Artist's concept of a potentially habitable super-Earth orbiting a star called HD 20794. Illustration credit: Gabriel Pérez ...

The James Webb Space Telescope has spotted a 'rogue' cosmic object barrelling through our galaxy without a star, and covered ...

Mar. 17, 2025 — The James Webb Space Telescope has captured its first direct images of carbon dioxide in a planet outside the solar system in HR 8799, a multiplanet system 130 light-years away ...

Astronomers have detected mysterious X-ray signals coming from a nearby white dwarf star for more than 40 years. We may now ...

Even among its kind, Uranus is a strange planet, given its tilted configuration, its flagging internal heat and its squishable magnetic shield. To date, only one spacecraft, Voyager 2, has dropped ...