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

Six planets are parading across the sky, appearing as some of the night's brightest stars. A few easy tips can help you ...

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...

The sun is at the centre of the solar system. The solar system is the name we use to describe the eight planets, and their moons, that circle, or orbit, around the sun. CHILD: Our planet ...

The enormous visitor to our solar system may have been about 8 times the mass of Jupiter, and come nearly as close to the sun ...

For much of January and February, you have the chance to see six planets in our solar system after dark, although two — Uranus and Neptune — will be hard to see without a telescope or high-powered ...

Despite common assumptions, the disk of our Solar System is warped, and the planets travel around the Sun in slightly eccentric (or oblong) orbits. Scientists now think that a mysterious object ...