“Whether it is real or not, it is 100 percent NOT Planet Nine,” Brown says. “Planet Nine is a prediction based on inferred ...

As more of the solar system has been explored and imaged, all kinds of geographical features have been mapped on many of our ...

"Rings are mostly made of ice and small rocks," said William Saunders, a planetary scientist at NASA's Langley Research ...

The solar system's smallest planet is quickly approaching superior conjunction, so catch it in the morning sky while you can.

Most astronomers agree that life is likely common throughout the universe. While Earth is the only world known to have life, ...

The James Webb Space Telescope has turned its infrared eyes toward Jupiter, capturing auroras hundreds of times brighter than ...

Scientists previously thought that solar geoengineering—or releasing particles into the atmosphere to reflect solar ...

The presence of another planet in the solar system could explain the odd movements of some of the bodies in the Kuiper Belt.

From outer space threats to dangerous dino drama — from super-powered action to robotic horror — and from mega-budget ...

NASA’s Lucy spacecraft captures asteroid Donaldjohanson, marking a new step in its mission to explore the solar system’s ...

Vesta, one of the two largest bodies in our solar system's asteroid belt, has long been thought to be more than just another ...

NASA’s Nancy Grace Roman Space Telescope is gearing up to unlock the deepest secrets of the universe with three ...