NASA officials said what Juno spotted was 'the most powerful volcanic event ever recorded on the most volcanic world in our ...

Jupiter and Mars will appear to make ultraclose approaches to the moon on two nights this week. Here's how to get the best ...

On this particular night, all four moons will be in view. Flanking Jupiter on one side, going outward from Jupiter will be Io, Europa and Callisto and Ganymede, while all by its lonesome on the ...

The brutal conditions also make Io intriguing to NASA scientists intent on learning more about the innermost and third-largest of Jupiter’s four Galilean moons. For nine years, a spacecraft ...

The moon, nearly two nights past first quarter and appearing ... Earth's faster motion around the sun is causing Jupiter to fall behind us. By the end of February, Jupiter is 41.4 light-minutes away ...