Containing over 400 active volcanoes, its surface is always changing as these volcanoes erupt continuously.Ĭallisto is often described as a hunk of ice and rock. This moon of Jupiter is the most volcanically active spot in the Solar System. This ocean is believed to have more water than what we have here on EarthĪmong the Galilean moons, Io is said to be the first moon to be observed by Galileo. A few years ago, the Hubble Space Telescope found evidence that Ganymede contained saltwater oceans beneath its surface. Named after the cupbearer for the Greek gods, Ganymede is the largest natural satellite in the Solar System. The four moons Io, Callisto, Europa and Ganymede that Galileo saw then, became known as the Galilean Moons that we can still observe to this day. This event was the foundation for the invention of the telescope for astronomical use. He discovered it when Galileo pointed the telescope lens made by Optometrist Hans Lippershey. The Galilean Moons were first observed by Galileo Galilei in 1610. In this article, we will discuss the most famous moons of Jupiter The Galilean Moons. Among these storms is the Great Red Spot which is the largest anticyclonic storm in the Solar System.Īs interesting as its features, Jupiter is also home to many natural satellites. Its atmosphere composed mainly of Hydrogen and Helium are always hurled up in storms. The planet is also famous for its weather systems. For comparison, Jupiter can easily fit more than 1,300 Earths in it. Jupiter is the largest planet in the Solar System.
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