If you’re looking for a way to fill an evening this month with something wonderous, look no further than the night sky above ...

The so-called 'planetesimal belts' are filled with tiny millimeter-sized particles created by collisions between comets.

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

All of our solar system’s planets are lining up to parade through the night sky at once. This extraordinary celestial event will see the sky scattered with seven visible planets in what is known ...

A powerful new tool comes online this year that could help astronomers locate the mysterious planet hiding somewhere beyond ...

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 ...

Tonight and throughout January, stargazers can see a planetary alignment in the night sky or what some are calling a planetary parade.

Skywatchers: A six-planet alignment peaks this week as Mars, Jupiter, Uranus, Neptune, Venus, and Saturn come together for ...

When you first learned about the Solar System, you probably saw diagrams that made it look orderly, with planets arranged in circular orbits around the Sun on a flat disk. But in reality, our Solar ...

Plate tectonics give Earth its mountains, earthquakes, continental drift and maybe even helped give rise to life itself. But ...

A planet-sized visitor possibly visited the solar system billions of years ago and permanently changed the cosmic neighbourhood by warping the orbital path of four outer planets of the system, a ...

A new study suggests that a planet-sized object may have passed through the solar system billions of years ago.