An object up to dozens of times the mass of Jupiter flying through our solar system may have disrupted planetary orbits.

Test your knowledge on our solar system, from the biggest and smallest planets to the behemoth mountain on Mars.

Encountering Neptune in 1989, NASA’s Voyager mission completed humankind’s first close-up exploration of the four giant outer ...

Carrying out simulations to try and discover what best explains the orbits of these objects, the team found that a model that ...

Earth's name, unlike other planets named after Greco-Roman deities, originates from Old English "eorþe," meaning soil or ...

Over the last ten years, OPAL has observed Uranus' northern hemisphere, which has faced the inner solar system for the ...

Weather permitting, Jupiter will not only be brighter than most other stars and planets in the evening sky, but will also be ...

NASA and ESA’s Hubble Space Telescope has been observing the outer planets through a program called OPAL (Outer Planet Atmospheres Legacy). This initiative focuses on tracking Jupiter, Saturn, Uranus, ...

The solar system, long believed to be a relatively stable and isolated system of planets, moons, and distant bodies, may have ...

These evenings, when it is clear, there is (what appears to be) a fairly bright yellow "star" in the southern sky. It is not ...

Extrasolar gas giant planets are a necessary stop on the road to finding life elsewhere in the cosmos. Here's why we need to ...

When Oumuamua traversed our Solar System in 2017 it was the first confirmed Interstellar Object (ISO) to do so. Then in 2019, ...