Astronomers watched a distant star dim for months and found a metal-rich cloud that may be the aftermath of a massive ...

The space rock is hurtling through our cosmic backyard at a zippy 26,200 miles per hour, according to the space agency.

The most unsettling space images are not of black holes or distant galaxies, but of stars that look eerily like our own Sun ...

For over a century, scientists have suspected there could be a hidden planet lurking far beyond Neptune—massive enough to ...

Despite its small size, Mars seems to have a huge impact on the orbital cycles that govern Earth’s climate, especially those ...

The object dubbed Earth's "second moon" is actually a quasi-satellite that's accompanied the planet since 1957 — not a true ...

Astronomers have long searched for life within a rather narrow ring around a star, the "habitable zone," where a planet ...

Some 350 light-years away, the V1298 Tau system features an infant sun-like star, just 23 million years old, orbited by four ...

Realising that our solar system isn’t like most others out there has helped astronomers rewrite the story of how it formed ...

When my colleagues and I send them out to explore our solar system, it's important for us to understand the 3D map of our ...

In the bigger picture, "down" could be defined as being below the plane of the solar system, which is known as the ecliptic.

Stargazers will in one week have a chance to spot Saturn and the moon sharing a section of the night sky in what's known as a ...