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 ...

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

A radio telescope in South Africa has unearthed a giant galaxy—dubbed a "cosmic megastructure"—with plasma jets that measure ...

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

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

The six planets will be visible in the days immediately leading up to Jan. 21, and for about four weeks afterward. Mars, ...

Venus, Saturn, Jupiter and Mars are all visible after sunset, but social media claims about it being a rare "planetary ...

A similar parade of planets took place last June, but only two planets could be seen without any special equipment. This time ...

Six planets will be in alignment this weekend, with four of them shining bright in one sweeping view. What to know about the ...

The planets are aligning in an ultra-rare “planet parade” phenomenon that can be seen in the evening sky without special equipment. On 25 January, six planets will line up in a row at the same time in ...

Astronomers have unveiled an explosive cosmic fireworks display of stars interacting with their environment. This dazzling ...