Remember 3I/ATLAS? Yes, the interstellar comet that made plenty of headlines in 2025 is still romping through our solar system.

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Our solar system is mostly arranged along one plane in space, as in this not-to-scale artist's diagram. NASA/JPL, CC BY If you’ve ...

The interstellar comet 3I/ATLAS is leaving our solar system. See new photos from a European Space Agency orbiter on its way to Jupiter.

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. The solar system suddenly has a new member. A new object ...

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 ...

Comet 3I/ATLAS, the third known interstellar object ever detected passing through our solar system, carries a chemical signature that does not match what astronomers typically see in comets born ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. An illustration showing Planet Nine, a hypothetical, undiscovered planet in our solar system. New research now suggests the ...

Earth’s gravity has a lot to do with what people think is up and what is down. Things fall down toward the ground, but that direction depends on where you are.