, and Callisto. These would give humans access to the Jovian System and its vast resources and serve as a stepping stone to Saturn and the outer Solar System.
"Those heading to Callisto are invited to take a tour of the Great Craters! Our surface crawlers will whisk you to the dark side of the moon, where you can look upon the domes of Adlinda, Asgard, Utgard, and Valhalla! The city lights are beautiful. But even more impressive is Jupiter's Great Red Spot, which will be making an appearance!"Minoan, Rhadamanthean, and Aeacean Seas.viewing opportunities for Europan sharks, rays, and other indigenous lifeforms.
Io is one of the most geologically active objects in the Solar System, with over 400 active volcanoes and more than 100 mountains , and lava plumes that have been seen reaching up to 300 miles into space. Io has a very thin atmosphere made up of volcanic gases like sulfur dioxide , sulfur monoxide , sodium chloride , sulfur, and oxygen.as a result of charged particles from Jupiter’s magnetosphere interacting with its atmosphere.
Europa has a tenuous atmosphere composed mainly of molecular oxygen , water vapor, and trace amounts of sodium. This atmosphere is the product of radiolysis, where UV radiation from the Sun and charged particles from Jupiter's magnetosphere cause ice to sublimate and become chemically disassociated with hydrogen and oxygen gas.
Scientists also believe that Ganymede has a deep ocean nestled between two layers of ice – a layer between the ocean core and a surface layer above it. The presence of this ocean has been confirmed by readings taken by orbiters and through studies of how Ganymede’s aurora behaves. These indicate that Ganymede’s auroras are affected by the moon’s magnetic field, which in turn is affected by the presence of a large, subsurface salt-water ocean.
Unlike the other Galileans, Callisto’s distant orbit means that it has never experienced much in the way of tidal heating, which has had a profound impact on its internal structure and evolution. Its average density suggests a composition of about equal parts of rocky material and water ice, with some additional volatile ices such as ammonia.