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 ...

Baker said that there are other astronomical events that may be more interesting than the parade of planets. Baker said Mars ...

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

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

Six of our cosmic neighbors are expected to line up across the night sky tonight, in what has been dubbed a "planetary parade ...

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 ...

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

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

Worlds will align for a "planetary parade" in January, with four bright and easily visible to the naked eye. But an even ...

Sky watchers are in for a treat this month as the stars align to give amateurs a shot to see six planets at once.