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 ...

The organic material found in a few areas on the surface of dwarf planet Ceres is probably of exogenic origin. Impacting ...

Mars, Venus, Jupiter and Saturn should be visible to the naked eye, but get a telescope and you can spot Neptune and Uranus.

When you first learned about the Solar System, you probably saw diagrams that made it look orderly, with planets arranged in ...

Stargazers will be treated to a dazzling six-planet "alignment" this January.

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

In the early evening, look to the southwest and you'll see Venus (the brightest object in the sky after the Sun and Moon) and ...

Stargazers, prepare for the parade of planets that will take place over the next few nights in the sky. Here's what you need ...

Astronomers discovered supersonic winds on a giant gas planet located over 500 light-years from Earth. In a study released ...

Although it's being mistakenly promoted as a "rare planetary alignment," one of the best "planet parades" in half a century ...

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