The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

The red planet While we don’t have images of many of the planets in the solar system since they’re too far away, we do have a selection of images of Mars, including this beauty that reveals ...

All seven of the other planets in our solar system are about to become visible at once in a great planetary alignment – here’s how to spot the celestial show ...

Astronomers discovered the gas giant planet — dubbed a "hot Jupiter " — in 2016, but have continued to investigate this ...

Scientists believe that two asteroids might be fragments of long-lost "planetary embryos" from the early solar system.

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit before shoving four of the solar system's planets onto a different course.

It is the fastest wind ever measured in a jet stream that goes around a planet. In comparison, the fastest wind ever measured in the solar system was found on Neptune, moving at "only" 0.5 km per ...

It is the fastest wind ever measured in a jetstream that goes around a planet. In comparison, the fastest wind ever measured in the Solar System was found on Neptune, moving at 'only' 0.5 km per ...