The team still can't confidently rule out the existence of Europa's water vapor, especially as similar plumes have been more ...

The prospects of tall, vapory plumes of water gracing Europa's surface caused a huge splash in astronomy—but the very ...

A study suggests that the ice giant's largest moon, Triton, made a dramatic entrance to the Neptunian system long ago, ...

Over at Jupiter, the solar system’s largest planet, the Galilean moons are showing off orbital mechanics in motion. After sunset, Jupiter is slowly sinking in the west, the brightest point of light in ...

You can probably conjure this vision of the moon—hold the image in your mind and transmit it off this planet and onto our shining opalescent companion. Peaks in the sun? I’ve seen that. This week, we ...

After a day of testing the Orion capsule high above the planet, the crew of the NASA mission became the first people to head into deep space since 1972. Katrina Miller Reporting from Johnson Space ...

Jupiter Was Thousands of Times Brighter, Likely Vaporized Water Off Its Galilean Moons Trump branded 'unhinged' amid health concerns after Walter Reed hospital claims This is the first triple play of ...

The Jupiter Icy Moons Explorer (JUICE) probe is on its very long journey to Jupiter. It won’t be until after this decade is over that the spacecraft will finally arrive at the King of Planets. Once ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

With no Moon in the early-evening sky, let’s chase down a classic deep-sky object tonight: M1, the first entry in Charles Messier’s list of “not comets” and also known as the Crab Nebula. This smudge ...

Icy moons circling the outer planets may be far more dynamic—and explosive—than they appear. New research suggests that when heat from tidal forces melts their ice shells from below, the sudden drop ...