A long-standing mystery about the presence of hydrogen peroxide on Jupiter's icy ocean moon Europa may be closer to being ...

A large lunar crater featured in the iconic 'Earthrise' photo has just helped the European JUICE spacecraft hone its ...

SWRI experiments could explain puzzling levels of equatorial hydrogen peroxide on Saturn's moon Europa detected by the JWST.

Catch the solar system’s largest planet satellite sharing the constellation Gemini the Twins with our Moon this morning ...

Look east around 4 a.m. local time, just before dawn, to see the slender form of the crescent moon climb above the horizon.

In a recent episode of SETI Live, Communications Specialist Beth Johnson spoke with Ian Pamerleau, lead author of a new study ...

A SpaceX Falcon Heavy launched NASA's Europa Clipper mission Monday to investigate Europa, a moon of Jupiter's that has an icy surface which may have an ocean under it, teeming with life. (Photo ...

NASA spotted something moving in one of the moons of Jupiter. Some natural satellites have similar structures to the Earth, ...

Jupiter’s moon Callisto passes near the planet’s northern limb, shortly before Io transits and Ganymede emerges from the gas giant’s shadow.

Jupiter, shining brightly at magnitude –1.9, dominates the western sky. From around 9 to 9:30 p.m., Jupiter’s moon Callisto grazes the planet’s northern edge—a unique event best viewed through a ...

Callisto, Jupiter's second-largest moon, may have a rocky surface with an ocean beneath the surface. If there was a contest for the most interesting moon in our solar system, Callisto would be a ...