Astronomers are closing in on one of the most tantalizing possibilities in planetary science, evidence that a previously unknown world may be lurking in the outer reaches of the solar system. The ...

"This is a big step in understanding the outer solar system." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Breaking space news, the latest ...

Astronomers have revealed new research showing that millions of new solar system objects are likely to be detected by a brand-new facility, which is expected to come online later this year.

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. 2023 KQ14, nicknamed “Ammonite,” is a trans-Neptunian object ...

Planetary scientists have long debated where the material that formed Earth comes from. Despite its location in the inner ...

Voyager 1, launched in 1977, has traveled farther than any spacecraft in human history. After more than four decades of silent endurance through space, it now sails beyond the orbit of the outer ...

The workings of our solar system are roughly the same now as they have been for millions of years. Moons circle their planets, the planets circle the sun, the sun’s magnetic fields and sunspots wax ...