Astronomers have identified a small but significant possibility that a Neptune-sized planet is quietly orbiting within the ...

Sci-fi movies and TV shows love to place a planet inside a binary system. In reality, a planet shouldn’t be able go around ...

A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...

The interstellar object 3I/ATLAS has gathered significant scientific attention, and soon it will reach its closest point to ...

On August 24, 2006, our solar system lost a planet. It wasn't by cataclysmic destruction, but rather by the vote of the International Astronomical Union, which declared that Pluto, considered the ...

A tiny meteorite is rewriting what scientists thought they knew about the origins of our solar system. New evidence found in shavings from a meteorite known as Northwest Africa 12264 — a 50-gram (1.8 ...

While its star projector leaves a lot to be desired, the Science Can Solar System Planetary Projector is a fantastic educational tool for kids, with its solar system model, complete with talking ...

Over the past seven decades, thousands of sophisticated spacecraft have been launched on ambitious missions to look down on ...

(CNN) — 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 ...