What is Ganymede?

Ganymede is Jovian Moon, Jupiter's largest satellite and the largest satellite in the solar system. With a diameter of 5262 km is greater than mercury, although only with half Mercury mass. Together with IO, Europa and Callisto, Ganymede Galilee is a month, which means that it was discovered by Galileo Galilei in 1610 with one of the first telescopes. Ganymede is named after the bearer of the cups of the Greek gods. Like the other Galilean months, Ganymede is made of about the same parts of silicate rock and various ice creams. Some parts of its surface look like a ice rink that was broken by a hammer, in this case the hammer had an impact on asteroids. Overall, Ganymede looks light brown, like sandstone.

The third visible satellite Jupiter was historically referred to as Jupiter III. Ganymede has a weak oxygen atmosphere. It also has its own magnetic field, the only moon in the solar system that has one. This is probably due to conductive material slowly circulating in its core,Like a country. Sufficiently large celestial bodies have the internal temperature necessary to melt iron and dynamics of convection that causes its circulation.

Like other Galilean months, Ganymede has a thin subsurface ocean. It is believed to be less likely to contain life than Europe, because the ocean of Europe is closer to the surface. Ganymede circulates 1,070,000 km from Jupiter, about three times the distance between the ground and the Moon.

The largest surface element of Ganymede is Galileo Regio, a bursting concentric structure of a ring similar to Valhalla on Callisto. Strongly crater areas on Ganymede have a surface over four billion years, but lighter areas are somewhat younger. Ganymede's craters lack a well -defined central dome and the edges of the craters on Mercury and Ganymede's bark is made of a relatively weak ice to flow.