Here's why — Europe's JUICE probe snaps hi-res pics of Earth and the moon on its way to Jupiter (photos) — Why will it take Europe's JUICE spacecraft 8 years to get to Jupiter? The new images from ...

Dubbed "araneiform terrain," the Mars surface formations span over a half-mile long and have hundreds of branches that ...

The "spiders" are actually features in the Martian crust called "araneiform terrain," and scientists now understand how they might have formed.

Researchers have recreated the bizarre spider-like features seen on the surface of Mars for the first time ever. The ...

The first NASA spacecraft dedicated to studying an ocean world beyond Earth, Europa Clipper aims to find out whether the ...

ESA's Mars Express orbiter captured footage of the Mars' moon Deimos pass in front of Ganymede, Europa, Jupiter, Io and ...

A new gravity map of Mars reveals hidden structures and active mantle processes, challenging established geological theories.

By Deane Morrison During, Mars and Jupiter continue to go their separate ways, widening the gap between them from 9 to 23 degrees. Both planets are surrounded by bright stars usually seen on winter ...

Studies of gravity variations at Mars have revealed dense, large-scale structures hidden beneath the sediment layers of a ...

Europa Clipper is officially slated to launch on October 10, a month from today, following crunch-time reviews of the ...