All together, Jupiter's moons form a satellite system called the Jovian system. The most massive of the moons are the four Galilean moons: Io, Europa, Ganymede, and Callisto, which were independently discovered in 1610 by Galileo Galilei and Simon Marius and were the first objects found to orbit a body that was neither Earth nor the Sun.

There are 95 known moons of Jupiter, as of 1 November 2023. Jupiter has the second largest number of moons of any planet in the Solar System. [1][2][3] The most massive of the moons are the four Galilean moons, which were independently discovered in …

Jupiter is the largest planet in the solar system and has, as of 2023, 95 known moons. The four largest moons of Jupiter—Io, Callisto, Ganymede, and Europa—were the first objects in the solar system discovered with a telescope.

Mar 12, 2025 · Jupiter has 95 moons that have been officially recognized by the International Astronomical Union. But the number doesn't capture the complexity of the Jovian system of moons, rings and asteroids. The giant planet has thousands of small objects in its orbit.

Nov 6, 2024 · All you need is a good pair of binoculars (or a telescope) to see the four largest moons of the biggest planet in our solar system, Jupiter. Three of the four moons are bigger than Earth’s...

Jun 8, 2023 · Jupiter, the largest planet in our solar system, boasts a whopping 95 moons, making it the second-most populous planet in terms of its companions (Saturn has the most moons.)

Jan 29, 2025 · Modern astronomer Scott S. Sheppard has discovered the most moons of Jupiter, including nine in 2017 alone. Galileo Galilei spotted the first Jupiter moons in 1610 with a new invention called a telescope.

Jupiter has four large moons which were discovered by Galileo in 1610 using a 20-power telescope. These moons are known as the Galilean moons and they are called Io, Europa, Ganymede and Callisto. Jupiter also has dozens of other smaller moons that are thought to have originated from passing asteroids. So how many moons does Jupiter have?

Sep 4, 2023 · Jupiter, the largest planet in our solar system, boasts a remarkable entourage of moons, numbering over 80 known satellites and potentially many more yet to be discovered. Among these diverse celestial companions, several stand out as particularly intriguing and scientifically significant.

Feb 11, 2025 · Jupiter has 95 recognized moons as of 2023. The largest moons of Jupiter are the Galilean moons: Io, Europa, Ganymede, and Callisto. Ganymede is the largest moon in the solar system, surpassing Mercury in size with a diameter of 3,273 miles (5,262 kilometers).

Apr 13, 2023 · 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. The origins of Jupiter's Galilean...

Dec 26, 2023 · Jupiter’s Galilean moons are the closest large moons to Earth, and are therefore the most easily visible through a small telescope. Today, NASA’s Juno mission is in orbit around Jupiter, getting opportunities to observe some of its moons.

Apr 9, 2019 · A 3D rendering of Jupiter and some of its moons. Jupiter has 79 known moons, the largest number of moons for a planet in the solar system, that vary in size and characteristics. Researchers have grouped the moons into two broad categories namely regular satellites and irregular satellites.

Jul 1, 2016 · 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. Large craters are shown in...

Jul 3, 2019 · Meet the Moons of Jupiter . The planet Jupiter is the largest world in the solar system. It has at least 67 known moons and a thin dusty ring. Its four largest moons are called the Galileans, after astronomer Galileo Galilei, who discovered them in 1610. The individual moon names are Callisto, Europa, Ganymede, and Io, and come from Greek ...

Sep 15, 2015 · First, there are the largest moons known as the Galileans, or Main Group. Together with the smaller Inner Group, they make up Jupiter's Regular Satellites. Beyond them, there are the many...

Jupiter and its system can easily be thought of as a solar system of its own. With a total of 79 known moons, Jupiter’s world is rich with celestial bodies of varying sizes, features, and behaviors. This guide will walk you through why Jupiter …

Sep 29, 2020 · Jupiter’s regular moons consist of the Galilean moons and an inner group of 4 small moons with diameters less than 200 km / 124 mi, and orbits with radii less than 200,000 km / 124,274 mi. All of these moons have orbital inclinations of less than half a degree.

Jan 8, 2001 · University of Hawaii Institute for Astronomy scientists report their discovery of 11 new satellites of Jupiter, all members of Jupiter's outer "irregular" satellite system. These observations double the number of such moons known to orbit the planet and are the largest number of satellites ever discovered at one time.

Dec 2, 2024 · Known for its Great Red Spot, Jupiter also boasts four bright, fast-moving moons: giant Ganymede, cratered Callisto, volcanic Io, and icy Europa.