The universe came into existence just under 14 billion years ago, with the main phase of star and galaxy formation peaking at ...

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 ...

It's an evocative idea that has long bedeviled scientists: a huge and mysterious planet is lurking in the darkness at the ...

Astronomers have just uncovered a massive new object at the edge of our solar system — and it could change everything we thought we knew about space. Named 2017 OF201, this trans-Neptunian object ...

A new dwarf planet discovery in the outer solar system is challenging the long-standing theory of a hidden giant planet ...

NASA's Perseverance rover is exploring a new Mars region called Krokodillen, which is thought to harbor some of the oldest and most intriguing rocks on the Red Planet.

Earth has a new neighbor that lives far, far away. Scientists from the Institute for Advanced Study's School of Natural ...

The global scientific community was watching with keen interest as China launched its Tianwen-2 probe on Thursday, a ...

After surviving the extreme, long-haul journey, you'd next have to navigate all 13 of Uranus' dusty rings - a bit like a spy ...