Evidence that rocky planets beyond Jupiter formed as rapidly, and at the same time, as the inner planets could transform our ...

In a cosmic first, scientists watched planet-forming materials begin to solidify around a newborn star, offering a peek into ...

This artist’s concept depicts one of the solar system’s inner planets slamming into Earth after being nudged on a collision course by a passing star. Such a world-shattering cataclysm is ...

There’s a giant ball of ice barreling through the solar system right now, and it’s bigger than any we’ve seen before. It poses no threat to Earth, but this comet, called C/2014 UN271 ...

A nearby star drifts into the outskirts of our solar system. Its gravity disturbs the Oort Cloud and alters the orbits of far-out objects.

A recent study indicates a small chance that Earth could be ejected from our solar system due to passing stars. Simulations suggest these stellar encounters might disrupt planetary orbits ...

The Last Time NASA's Voyager "Looked Back" At Our Solar System, This Is What It Saw Before it met the 30,000-50,000 kelvin wall at the edge of our Solar System, Voyager 1 took its final images.

This new dwarf planet may exist at the edge of the solar system, possibly disproving Planet Nine's existence. This is the story of that newly encountered planet.

In 1977, NASA launched the Voyager probes to study the Solar System's edge, and the interstellar medium between the stars. One by one, they both hit the "wall of fire" at the boundaries of our ...

An accidental discovery in an astronomy show offers researchers a new clue about the mysterious Oort Cloud, a large expanse of icy bodies revolving around the sun.

A newly detected planet beyond Pluto is not just expanding our understanding of the Solar System, it might be quietly rewriting it. Astronomers from the University of Taiwan recen ...

Discover interesting facts about the sun, the solar system's central star that supports all life on Earth.