The universe is filled with planets that defy imagination. From worlds that rain molten metal to giants light enough to float ...

Even at a glance, the planets in our solar system are wildly diverse. Huge and small, airless and densely packed with ...

Scientists have discovered a bizarre planetary system where a rocky world orbits farther out than giant gas planets, defying ...

A bizarre planetary pairing 190 light-years away is challenging everything astronomers thought they knew about how worlds ...

A strange 200 million-year-old object with the mass of a planet has been discovered 20 light-years from Earth, outside our solar system. The "rogue," as it's referred to by researchers, is producing ...

Astronomers have captured some of the most detailed images of debris discs—rings of leftover dust, gas, and rocks that circle a star—from fully formed, "teenage" planetary systems. And those images, ...

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Astronomers have found a planetary system that seems to have formed inside-out. While most systems, like our own, have rocky planets closest to their star and gaseous ones further out, the LHS 1903 ...