Astronomers spotted a potential Earth-size rocky world orbiting a white dwarf, suggesting a future in which our planet outlives its star.

A distant star system offers hope that our planet will keep spinning, even after the Sun expands into a red giant.

If it does survive the trek into interstellar space, it won't be the first to get there. Voyager 1 and Voyager 2, both ...

A new planetary system was discovered about 4,000 light-years away from our own. The findings may provide answers as to what ...

Beyond our solar system, countless alien worlds of lava, ice, water and noxious gas swirl through the cosmos. Here are some ...

Two strong solar flares in the space of 48 hours will bring stunning auroras to northern states and the Midwest over the next few days.

The single nearest star to the Sun—which is to say, the closest star moving independent from a star system—has at least one ...

Get your cameras ready: A massive solar flare, the strongest since 2017, has caused large eruptions that are forecast to cast ...

Orbiting Barnard's star, the nearest solo star to Earth, the world is too hot to be habitable—a scorching 257 degrees ...

A strong G3 geomagnetic storm warning was issued by NOAA as a solar storm heads toward Earth. The northern lights will be ...

The world—which orbits Barnard's Star, just six light-years from us—has a year that lasts barely three Earth days.

Business owners said the nearby encampment has been cleaned up repeatedly by the city, only for it to pop right back up.