Jupiter’s four largest and most well-studied moons were first discovered more than 400 years ago. And they still make for wonderful observational targets.

Each of Jupiter's other 91 official moons has a diameter greater than 0.6 mile (1 kilometer) — but only 57 have names, and just eight have regular, nearly round orbits.

Io orbits closest to Jupiter, out of the four Galilean moons. Io has been studied by spacecraft from Pioneer 10 and 11 in 1973 and 1974, all the way up to New Horizons in 2007, augmented by Earth ...

Jupiter has 80 known moons, with more still being discovered by astronomers and amateur sky-watchers alike. That’s second only to Saturn’s 83 moons in our Solar System. The below video does a ...

Jupiter’s four largest moons were discovered by Galileo in 1610 and named after mythological lovers of Zeus. NASA’s Juno spacecraft arrived at Jupiter on July 4. Callisto Large craters are ...

Scientists have discovered 12 previously unknown moons orbiting Jupiter, and one of them is a real oddball. While hunting for the proposed Planet Nine, a massive planet that some believe could lie ...

Jupiter now has a total of 92 moons, more than any other planet in the solar system. Getty Images/iStockphoto Astronomers have discovered 12 new moons around Jupiter, putting the total count at a ...

Each of Jupiter's other 91 official moons has a diameter greater than 0.6 mile (1 kilometer) — but only 57 have names, and just eight have regular, nearly round orbits.

Jupiter already reigns as king of the planets — it’s the largest one in our solar system. And now, the gas giant has the most known moons, too. Astronomers have observed 12 additional moons ...

In 2019, Saturn pushed ahead of Jupiter as the planet with the most moons in our solar system. Now, however, Jupiter’s moon count has been revised thanks to the discovery of 12 new moons ...

New images from the Hubble space telescope show three of Jupiter’s largest moons moving across the face of the planet at the same time, a rare occurrence that happens only once or twice a decade.