3I/ATLAS is now exiting our solar system at more than 137,000 miles per hour.

What can rocky planets orbiting in the outer parts of a solar system teach scientists about planetary formation and evolution? This is what a recent study published in Science hopes to address as a ...

A Canadian scientist is calling for action to protect significant geological and historical features on the moon, Mars, and other planets. Jack Matthews of Memorial University of Newfoundland says as ...

Astronomers are closing in on one of the most tantalizing possibilities in planetary science, evidence that a previously unknown world may be lurking in the outer reaches of the solar system. The ...

MIT astronomers using the James Webb Space Telescope have discovered that a rare "planetary odd couple", a hot Jupiter and a ...

It's true, though: outer space does have a smell, or rather, many smells. The cosmos isn't sterile or empty, after all. It's ...

LONDON — The search for an unknown planet in our solar system has inspired astronomers for more than a century. Now, a recent study suggests a potential new candidate, which the paper's authors have ...

A low-density, puffy planet orbiting relatively far from a young star in a nearly perpendicular orbit. What's going on? When you purchase through links on our site, we may earn an affiliate commission ...

Dwarf planets may be small, but they're some of the most intriguing objects in our cosmic neighborhood. These icy bodies orbit the sun just like the major planets, yet they follow their own rules, ...

Even at a glance, the planets in our solar system are wildly diverse. Huge and small, airless and densely packed with ...