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

Mercury, the innermost planet in our solar system, is full of surprises! Join us for an in-depth look at its physical ...

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 joint European-Japanese mission is only the second survey of Mercury, the least explored planet in the inner solar system ...

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

A spacecraft named BepiColombo is currently zipping by planet Mercury, making a very close flyby and snapping incredible high ...

It seems like it should be pretty easy to get to Mercury. The little rocky planet ... difficult to reach the innermost planet of our solar system—which makes it that much more impressive that ...

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

ESA and JAXA's BepiColombo mission recently completed its last flyby of Mercury, revealing stunning details about the ...

Emily Simpson has loved space since she was a 10-year-old kid celebrating her birthday at a planetarium. Now a recent Florida ...

Discover Snapchat Planets Order, a creative feature in Snapchat Plus to rank your closest friends like planets in a solar ...

A planet-sized visitor possibly visited the solar system billions of years ago and permanently changed the cosmic neighbourhood by warping the orbital path of four outer planets of the system, a ...