In fact, even a modest pair of binoculars will reveal the Galilean moons as tiny specks very close to Jupiter itself. Larger telescopes show them more clearly, of course.

The spacecraft came to within 930 miles of Io's surface—the closest any spacecraft has flown by the Jovian moon in over 20 years.

Close-up of the craters and furrows on Ganymede's surface. Credit: NASA/JPL-Caltech/SwRI Aside from being the biggest of Jupiter's 95 moons, Ganymede is best known for its axial tilt and deep ...

The moon and Jupiter have a hot date for Valentine's Day tonight, appearing close together in the night sky for most of the evening.

The first astronomer to discover moons around Jupiter was Galileo, back in the year 1610, but astronomers are still finding more and more moons around this gas giant.

How many moons does Jupiter have? Scientists have discovered dozens of them, but the answer may be more complicated than it seems.

NASA's Juno spacecraft recently made a close flyby of the Galilean moon.

Jupiter has lots of moons but the biggest and brightest are the four original ones discovered by Galileo in 1610 with his homemade telescope. They're known (no surprise) as the Galilean moons and ...

Scientists have spotted 12 more moons around Jupiter, adding to an already-huge number that just seems to grow and grow.

How many moons does Jupiter have? Scientists have discovered dozens of them, but the answer may be more complicated than it seems.

How many moons does Jupiter have? Scientists have discovered dozens of them, but the answer may be more complicated than it seems.