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

Our Solar System is a carefully balanced celestial dance held together by a virtually perfect balance of gravity and inertia.

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

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

A new study claims it is possible an "alien visitor" could have warped our solar system during its earliest years.

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 ...

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 ...

The year 2025 will be amazing for astronomy enthusiasts, with several planetary alignments predicted. The most significant ...

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

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

Further simulations on flybys into the inner Solar System revealed one of our own planets might be flung out of the ballpark ...