Later in December, the 3I/ATLAS interstellar comet will get as close to Earth as it ever will. Here's what to know.

Scientists studying samples from the Bennu asteroid located not too far from Earth continue to find clues as to how life ...

Nearly 4.5 million years ago, two large, hot stars brushed tantalizingly close to Earth's sun. They left behind a trace in ...

"During the early solar system's game of cosmic billiards, Earth was struck by a neighbor,” said Dauphas. “It was a lucky shot. Without the moon's steadying influence on our planet's tilt, the climate ...

Elisha Sauers writes about space for Mashable, taking deep dives into NASA's moon and Mars missions, chatting up astronauts ...

The telescope is part of a cluster of four observatories that include two in Hawaii and one in South Africa, whose job is to do exactly what the Chile telescope did: scan the skies for interstellar ...

Voyager 1 and 2 traveled billions of miles to reach the heliopause, showing how the Sun's magnetic influence marks the ...

Roughly four and a half billion years ago the planet Theia slammed into Earth, destroying Theia, melting large fractions of Earth’s mantle and ejecting a huge debris disk that later formed the moon.

Scientists traced the Moon's parent planet Theia to the inner Solar System, solving a 4.5-billion-year mystery.

Astronomers have discovered that the Solar System traversed the Orion star-forming complex, a component of the Radcliffe Wave galactic structure, approximately 14 million years ago. This journey ...

There's something big missing from our solar system — and that may be a good thing. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Planetary ...

Imagine never being able to dream of landing on Mars or traveling to Saturn. Not because it's impossible to get there, but ...