A potential new dwarf planet has been discovered in the outer reaches of the solar system, and its existence poses the ...

In February 2025, a stunning planetary alignment–also known as the planet parade–allowed observers to see seven planets in ...

The small world was found during a search for the hypothetical Planet Nine, and astronomers say the next time it will reach ...

As it orbits the sun once every 25,000 years, the celestial body 2017 OF201 travels beyond the Kuiper Belt into a region ...

U.S. astronomers hunting for "Planet Nine" have instead stumbled on what appears to be a new dwarf planet in the solar system's outer reaches.

Simulations show that the stars’ tug could send Mercury, Venus or Mars crashing into Earth — or let Jupiter eject our world from the solar system.

Jupiter, roughly 562 million miles from Earth today, has nearly 100 moons. But Batygin and his collaborator Fred Adams' research focused on two of the smaller ones, Amalthea and Thebe. Both are inside ...

The current hospital is already often at more than 90% capacity with no ability to grow in its current location.

A breathtaking new video compresses more than a decade of deep-space observation into a few seconds, revealing the hypnotic motion of distant worlds. The animation, created by astrophysicist Jason ...

Every year, Earth follows a familiar pattern of seasonal changes: As summer rolls around in the Northern Hemisphere, winter creeps in in the Southern Hemisphere, and vice versa. But do other ...

Is Revenge of the Savage Planet on Game Pass? Put to sleep and shipped halfway across the known universe, only to be given the boot as soon as you land; life is difficult as a space explorer ...

But in the case of planets, it’s possible that most of them are. Rogue planets—planets that are adrift in space, unmoored from any star—have been a topic of science fiction for a long time ...