High above the Moon, the Big Dipper appears to stand on the end of its bowl in the early evening, its handle sticking straight up into the sky. Jupiter’s Galilean moons are also visible this ...

A recent study found that Jupiter was once twice the size that it is now, making it big enough to swallow up 2,000 Earths.

Have a telescope? You might also get your last look at three of Jupiter's bright Galilean moons before solar conjunction. This is the view around 9 p.m. Central Time May 27. North is to the upper ...

as engineers and scientists worked together to design and build a spacecraft to reach one of Jupiter’s famed Galilean moons. But the dream of going to Europa started much earlier. “The name ...

The solar system’s largest and smallest planets meet in the evening sky, standing 2° apart shortly after sunset.

The celestial objects are so small, they're not even among Jupiter's four famous Galilean moons, which does include Io. But Amalthea and Thebe orbit the planet even closer than Io and have ...

the smallest and closest-orbiting of Jupiter’s Galilean Moons. Both of these satellites have slightly tilted orbits and small orbital discrepancies, which allowed Batygin and Adams to calculate ...

Recent flybys of the fiery world refute a leading theory of its inner structure—and reveal how little is understood about ...

Jupiter will soon end its brilliant year-long showing on consecutive evenings with a rendezvous with an exceedingly thin and very young crescent moon. Indeed, for the first opportunity on Tuesday ...

The King of the Planets teams up with an exceedingly narrow crescent moon for the last time this year in the evening sky on May 27. Jupiter will soon end its brilliant year-long showing on ...

During the red giant phase, both the Sun and Jupiter will shine brighter and become hotter. However, its moon Europa is ...