If there was a contest for the most interesting moon in our solar system, Callisto would be a contender. Jupiter's ...

Saturn runs rings around Jupiter Ratification of 128 new moons put the smaller gas giant way ahead on satellite count The ...

The vernal equinox occurs as Mercury stands still in Pisces and several of Jupiter’s moons transit in the sky this week.

But occasionally another asteroid or the influence of Jupiter's gravity can nudge some into another ... "One clue that we ...

Europa, one of Jupiter’s intriguing moons, is hiding an ocean beneath its icy shell — an ocean that might harbor alien life.

A rare total lunar eclipse is heading our way March 14—and if you're curious about whether your zodiac sign will feel the ...

Europa is the sixth largest satellite in our Solar System and the smallest of Jupiter’s four Galilean moons. Discovered by ...

Using data collected by NASA's Juno spacecraft as it flew past Jupiter's highly volcanic moon Io in late 2023 and again in ...

This year, we await a cosmic twist as Mercury – the planet of activity and ideas – goes retrograde in Pisces the next day ...

About 650 light-years from here, in the constellation Aquarius, lies the planetary nebula Caldwell 63, commonly known as the ...

NASA's Voyager 1 spacecraft discovered active volcanoes on Jupiter's moon Io. Before Voyager 1 flew by Io, scientists ...