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

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 ...

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

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 BepiColombo spacecraft captured the photographs during its last flyby of Mercury, a maneuver necessary to propel the ...

BepiColombo passed a mere 295 kilometers above Mercury's surface at 6:59 CET on Jan. 9. The flyby began on the planet's ...

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.

The close-up images reveal craters, the floors of which are in permanent shadow, and vast sunlit northern plains.

A rare parade of planets will light up the night sky throughout January. Six planets will be in alignment for the rest of the ...

Enigmatic planet Mercury posed for some closeups when the BepiColombo mission flew by. Craters, bright regions and volcanic ...

Venus and Saturn are currently in conjunction, meaning the planets appear close together in the night sky from Earth. These ...