Sotheby's are offering a rare printing of the Declaration of Independence from 1776. Shown in footage from January 17, the ...

Earlier this month, a full moon blocked Mars from view. Historically, some have taken that as a sign for peace as Mars has ...

This Valentine's Day, why not make your kid's holiday extra special with printable cards that they can design themselves?

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

All seven of the other planets in our solar system are about to become visible at once in a great planetary alignment – ...

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

Ever since Isaac Newton famously talked about gravity, its dominance as a force in our solar system has been well known. It's ...

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 ...

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 tough to see without a telescope or high ...

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 ...