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 ...

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

Stargazers will be treated to a rare seven-planet alignment in February. This is what scientists hope to learn.

It will be "a celestial event where multiple planets in our solar system appear close together in the night sky." ...

Six planets are lining up in a row from our Earthly view of the cosmos, in a spectacle that'll be visible in January through ...

The seven planets will not be perfectly aligned, but will appear in an arc across the sky due to their orbital plane in the ...

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

This January and February, a rare planetary alignment featuring Venus, Mars, Jupiter, Saturn, Uranus, and Neptune will be ...

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit before shoving four of the solar system's planets onto a different course.

A planetary parade is a colloquial term that applies when four or more planets line up in the night sky at once. Sky watchers ...

Stargazers can witness a rare planetary parade on January 21 and 25, with Mars, Venus, Jupiter, and Saturn visible to the ...