Astronomers have discovered a curious new exoplanet that challenges assumptions about hot Jupiters, some of the most extreme ...

The universe is filled with planets that defy imagination. From worlds that rain molten metal to giants light enough to float, this video uncovers the weirdest discoveries. Dive into the science ...

A mysterious "rogue" planet has been observed gobbling six billion tons of gas and dust a second—an unprecedented rate that blurs the line between planets and stars, astronomers said Thursday. Unlike ...

Our Solar System contains eight planets (sorry, Pluto) orbiting around the Sun. But while all planets are important members of the club, if we’re being honest, we know there’s a crown jewel of our ...

Astronomers have catalogued more than five thousand planets orbiting distant stars, and a handful of them defy almost ...

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 ...