volcanic activity
Volcanoes.
It is covered in volcanoes. Currently, it is the only known moon in our solar system to have active volcanoes.
The surface of Io is covered in primarily sulphur, with areas of sulphur dioxide frost.
Europa is the moon of Jupiter known for being covered in a thick layer of ice. This ice is believed to cover a vast, subsurface ocean that has sparked scientific interest in the search for potential extraterrestrial life.
Ganymede is a moon of Jupiter and the largest moon in the solar system. It is an ice-covered object larger than the planet Mercury.
Ganymede, the largest moon of Jupiter, is not a volcano. It is composed mainly of water ice and rock, and its surface is covered with various geological features including impact craters, ridges, and grooves. Volcanic activity has not been detected on Ganymede.
A moon of Jupiter is called a Jovian moon.
Jupiter is the planet with the moon Europa
The moon Io is the brightest moon when viewed from Jupiter due to its high reflectivity from its geologically active surface. Io's surface is covered in sulfur and sulfur dioxide, which gives it a bright appearance.
The seventh Moon of Jupiter is Elara
Jupiter's continental moon is Europa.
Jupiter's moon Io is sometimes referred to as the "Pizza Moon".