About 4.5 million years ago, a great cosmic dog kicked past our Solar System – and its effects may still be seen today.

Astronomers have discovered that 3I/ATLAS is carrying methanol and other chemicals that were probably important in the origin ...

New measurements of radio galaxies reveal that the solar system is racing through the universe at over three times the speed ...

New high-contrast images from SPHERE show a stunning variety of debris disks shaped by collisions of tiny planet-building ...

BRITS are clueless about our solar system – with four in 10 unable to identify the biggest planet and a quarter uncertain ...

Our Solar System has eight planets, a few dwarf planets and more than 200 moons. But wait. Are you seeing double? Or did ...

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

Isotopic fingerprints in lunar, terrestrial, and meteorite samples show Theia formed in the inner Solar System, likely near ...

Eight planets, hundreds of moons, hundreds of thousands of asteroids, and billions of comets orbiting our Sun make up our ...

Before the ribbon-cutting for the solar system walk on the Columbia Greenway Rail Trail on Nov. 29, created by WHS Astronomy ...