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 ...

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 ...

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 ...

Pluto follows a path with an angle 17 degrees above the plane of the solar system’s planets. NASA This bizarre and distant Earth-like planet, though, isn’t the first hidden world to be proposed.

Some may remember that Pluto was once considered our solar system’s ninth planet until it was demoted to dwarf planet in 2006, when scientists began to realize how many planetary bodies exist ...

Astronomers have observed an object that originated from beyond our solar system, thought to be an interstellar comet, speeding through our celestial neighborhood.

Depending on its mass and location, a black hole in our solar system could have relatively little impact or completely wreck Earth. (Image credit: Cavan Images / Luca Pierro via Getty Images) ...

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.