Would one frozen world, just visible on the rim of the Sun’s kingdom, turn decades of speculation on the concealed layout of ...

While astronomers have long searched for a mysterious ninth planet lurking beyond Pluto, a recent discovery is turning that search on its head. Spotted through the powerful Subaru Telescope in Hawaii, ...

A newly discovered object, dubbed A11pl3Z, appears to be moving too fast and straight to have originated in the solar system. If confirmed, it will be the third interstellar visitor ever spotted.

In our solar system, the first solid material to condense near Earth around the sun is found trapped within ancient meteorites – or rocks from space that survive their trip through Earth's ...

A new solar system has been found in the Milky Way. All 6 planets are perfectly in-sync, astronomers say. November 30, 2023 / 3:17 PM EST / CBS/AP ...

Our understanding of the solar system is a work in progress. Pluto’s demotion to a dwarf planet was just one of many revisions—in recent decades astronomers have cataloged new dwarfs, like far ...

That puts our solar system’s age at 4.5684 billion years, rather than 4.5673 billion years. “1.1 million years is a small change,” says Conel Alexander at the Carnegie Institution for ...

The sun is around 1,000 times more massive than Jupiter, which is the fifth planet in the solar system, so the effect on the sun as a result of the gas giant is no more than a 40-mile-per-hour ...

Have you ever wondered just how big space really is? It’s huge. In fact, it’s astronomical! The Colorado Scale Model Solar System depicts the Sun, the planets, and the distances between them all on ...

Thanks to new measurements of very old meteorites, the current consensus on the Solar System's age is 4.5684 billion years old, with an uncertainty of 240,000 years—a tiny fraction of a percent.