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Because someone - Galileo Galilei - looked through the new wonder tool - the telescope - and saw four - he thought they were stars at first - but later realised they were moons of Jupiter.

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14y ago

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Who discovered four satellites orbiting Jupiter?

Jupiter's four largest moons are called (from closest to furthest); Io (pronounced 'eye-oh'), Europa, Ganymede (the largest, and the largest moon in our solar system) and Callisto. These are also known as the Galilean satellites.


Are there planets with galilean moons?

Only Jupiter, the Galilean moons are the four largest moons of Jupiter which Galileo discovered.The four satellites discovered by Galileo orbit Jupiter.


What are the four largest largest and brightest satellites of Jupiter?

The four satellites are Jupiter's largest moons. They were found by Galileo Galilei. They are Callisto, Europa, Ganymede and Io.


Which planet has four largest satellites?

Jupiter


What has the four largest satellites in the solar system?

Jupiter has four large satellites, but they are not the four largest in the solar system. Jupiter has the largest, 3rd, 4th, and 6th largest satellites. Saturn has the 2nd largest and Earth has the 5th largest satellite. (Naturally I mean "natural satellites", otherwise called moons.)


Which are the four biggest satellites of Jupiter?

The four biggest satellites of Jupiter are Ganymede, Callisto, Io, and Europa. Ganymede is the largest moon in the solar system and is even bigger than the planet Mercury. These four moons are known as the Galilean moons, named after Galileo Galilei who discovered them in 1610.


What are the names of the four largest satellites of Jupiter?

Io, Europa, Callista, Ganymede


Who discovered the largest moon in Saturn?

Galileo discovered Jupiter's four largest moons, including Ganymede, the largest.


How many satellites dose jupiter have?

Jupiter has 66 natural satellites. Of these, 50 are less than 10 kilometres in diameter and have only been discovered since 1975. The four largest moons, known as the "Galilean moons", are Io, Europa, Ganymede and Callisto.


How many moons or satellites on Jupiter?

Jupiter has 66 natural satellites. Of these, 50 are less than 10 kilometres in diameter and have only been discovered since 1975. The four largest moons, known as the "Galilean moons", are Io, Europa, Ganymede and Callisto.


What are Jupiter's four big moons named?

The four largest moons of Jupiter are called the Galilean satellites, because they were discovered by Galileo when he first observed Jupiter with a telescope. Their names are: * Io * Europa * Callisto * Ganymede


What is a Galilean satellite?

A Galilean satellite is one of the four largest moons of Jupiter discovered by Galileo Galilei in 1610. These moons are Io, Europa, Ganymede, and Callisto. They are also known as the Galilean moons and are some of the largest and most geologically diverse moons in our solar system.