On July 6, 1938, an American astronomer named Seth Barnes Nicholson discovered Jupiter's moon Lysithea. Nicholson spotted ...

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

This gas giant has some really unique features that make it stand out. If you’re curious about space, learning a few things ...

Jupiter isn’t alone in this category; Saturn, Uranus, and Neptune are also gas giants, though Uranus and Neptune are often ...

NASA VOYAGER 1 & 2: JUPITER & MOONS, 1979 33.6 x 26 in. (85.3 x 66 cm.) NASA VOYAGER 1 & 2: JUPITER & MOONS, 1979 33.6 x 26 in. (85.3 x 66 cm.) Medium Chromogenic color photograph Size 33.6 x 26 in.

On March 2, 1979, a paper in Science ruminated on Io’s strange orbit. Because of the positions and orbits of neighboring moons, Io’s orbit is elliptical rather than circular. And when Io is ...

If you looked at the churning clouds near Jupiter’s pole, they appear like ocean currents on Earth — as if you’re looking at ...

Cameras aboard NASA’s OSIRIS-REx spacecraft snapped portraits of Jupiter and its moons as the University of Arizona-led team prepared to look for more elusive targets. On Feb. 9, the OSIRIS-REx ...

NASA’s Juno spacecraft has once again delivered a stunning view of Jupiter’s ever-changing atmosphere. In this latest image, ...

Researchers armed with the Hubble Space Telescope have revealed that some of Uranus' largest moons have one side brighter than the other — but not the side they were expecting.

Solar systems mostly keep to themselves. What’s ours is ours and what’s not is not. Stars are simply too far from each ...