With sapphire waterfalls, lava rain and orbits around dead stars, these distant worlds push the limits of what’s possible.

The star system V1298 Tau reveals that many planets begin as large, low-density worlds that slowly shrink and shed their ...

Artist's view of exoplanet SPECULOOS-3 b orbiting its star. The planet is as big as the Earth, while its star is slightly larger than Jupiter, but much more massive. (NASA/JPL-Caltech via Courthouse ...

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January has a few skywatching treats in store for us, but one of them is lasting the whole month. At least four of the planets will appear brightly in our nighttime winter sky, creating a sort of ...

A technique to cool the planet, in which particles are added to the atmosphere to reflect sunlight, would not require developing special aircraft but could be achieved using existing large planes, ...

Astronomers have discovered a relatively cool and small exoplanet orbiting a nearby star, with a “year” of several months. The find offers a rare opportunity to study planets and solar systems like ...