Microscopic crystals extracted from meteorites could help settle a debate about the birth of our patch of the Milky Way.

John Casani spent more than half a century turning speculative ideas about distant worlds into working spacecraft that could survive the trip. His quiet influence at NASA’s Jet Propulsion Laboratory ...

The James Webb Space Telescope (JWST) has begun unlocking secrets about mysterious objects lingering at the outer edges of our solar system. A new study, using JWST’s cutting-edge capabilities, ...

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 dubbed ...

Add Yahoo as a preferred source to see more of our stories on Google. The OSIRIS-REx spacecraft spent two years observing the asteroid Bennu before it collected a ...

Davide Farnocchia hunts down and tracks asteroids, and several years ago he saw something he couldn’t explain. Farnocchia works at NASA’s Center for Near-Earth Object Studies in California. Using ...

Astronomers have uncovered a massive new trans-Neptunian object, 2017 OF201, lurking at the edge of our solar system. With an orbit stretching 25,000 years and a size that may qualify it as a dwarf ...

Meet the surprising, oddball worlds moving around our solar system. From meteorites that impact Earth, to a moon that orbits backwards, to an imposter lurking in the asteroid belt, a variety of ...

NASA's Mars Reconnaissance Orbiter recently photographed Candor Chasma in Mars' Valles Marineris, the largest canyon in the entire solar system. When you purchase through links on our site, we may ...

Visit strange, frozen worlds to discover the bizarre ice that forms beyond Earth. Out in the solar system, ice can get bizarre. Visit strange, frozen worlds – from Uranus’s ultra-hot superionic ice, ...

Grab-and-go missions to asteroids have provided some of the most scientifically valuable samples since the Apollo missions—and they’re shaking up the search for life beyond Earth. The OSIRIS-REx ...