Astronomers are closing in on one of the most tantalizing possibilities in planetary science, evidence that a previously ...

Astronomers have spotted an intriguing cluster of objects in the Kuiper belt, the enormous, donut-shaped region of icy objects beyond the orbit of Neptune. This latest “inner kernel” was identified by ...

The newly identified cluster of Kuiper Belt objects lies about 4 billion miles from the Sun, offering fresh clues about how ...

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 extremely ...

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 ...

Mercury has long baffled astronomers because it defies much of what we know about planet formation. A new space mission ...

Astronomers at Princeton University have uncovered evidence that the outer solar system is more structured than long believed ...

In 2006, updated research led to Pluto being controversially demoted to dwarf planet status by the International Astronomical Union. The reasoning was that Pluto's location in the far-flung ...

A group of astronomers from across the globe have revealed new research showing that millions of new solar system objects will be detected by a brand-new facility, which is expected to come online ...

Astronomers have spotted an intriguing cluster of objects in the Kuiper belt, the enormous, donut-shaped region of icy objects beyond the orbit of Neptune. As New Scientist reports, it’s the second ...