Ganymede and Callisto are planet-sized moons of Jupiter, with surfaces composed of a mixture of dark dust and bright ice. Similar in size, they both have interiors of half ice and half rock/metal, but Ganymede’s interior appears to be segregated by density, while Callisto’s interior is mostly mixed.
What are some characteristics of Callisto?
Callisto has an icy surface covered by craters of various shapes and sizes, including bowl-shaped craters and craters with multiple rings. Data gathered by the Galileo spacecraft indicate Callisto may have a subsurface ocean and scientists estimate it may be 155 miles (250 kilometers) below the surface.
What are some unique characteristics of Ganymede?
Characteristics of Ganymede Ganymede’s surface is made up of primarily two types of terrain: about 40 percent is dark with numerous craters, and 60 percent is lighter in color with grooves that form intricate patterns to give the satellite its distinctive appearance.
What is the primary difference between Ganymede and Callisto?
Jupiter’s largest moons are Ganymede and Callisto, both low-density objects that are composed of more than half water ice. Callisto has an ancient cratered surface, while Ganymede shows evidence of extensive tectonic and volcanic activity, persisting until perhaps a billion years ago.
What is the gravity on Ganymede compared to Earth?
Colonization: Ganymede is considered a possible candidate for human settlement – and even terraforming – due to the many advantages it presents. For one, as Jupiter’s largest moon, Ganymede has a gravitational force of 1.428 m/s2 (the equivalent of 0.146 g) which is comparable to Earth’s Moon.
What are the unusual characteristics of each of the Galilean moons of Jupiter?
The largest four moons of Jupiter – Io, Europa, Ganymede and Callisto – were discovered by Galileo in 1610 and are known as the Galilean moons. They each have a radii larger than any of the dwarf planets and they are some of the largest objects in the solar system outside of the eight planets by mass.
How big is Ganymede compared to the moon?
Ganymede is the largest and most massive moon in the Solar System. Its diameter of 5,268 km is 0.41 times that of Earth, 0.77 times that of Mars, 1.02 times that of Saturn’s Titan (Solar System’s second largest moon), 1.08 times Mercury’s, 1.09 times Callisto’s, 1.45 times Io’s and 1.51 times the Moon’s.
What is Ganymede made of?
Structure. Ganymede has three main layers: A metallic iron core at its center, a spherical shell of rock (mantle) surrounding the core, and a spherical shell of mostly ice surrounding the rock shell. The surface is the very top of the ice shell. Scientists have discovered irregular lumps beneath Ganymede’s icy surface.
Why does Ganymede have no atmosphere?
Ganymede has no known atmosphere, but recently the Hubble Space Telescope detected ozone at its surface. The amount of ozone is small as compared to Earth. It is produced as charged particles trapped in Jupiter’s magnetic field rain down onto the surface of Ganymede….
| Ganymede Statistics | |
|---|---|
| Magnitude (Vo) | 4.61 |
How does Ganymede differ from Callisto quizlet?
How does Ganymede differ from Callisto? Ganymede is differentiated, and Callisto is not. The density of Callisto is 1.8 grams per cubic centimeter, and that of Ganymede is 1.9 grams per cubic centimeter.
Why do Ganymede and Callisto look different?
Yet Ganymede has a youthful surface, criscrossed by grooved terrain that has disrupted craters, while Callisto has an ancient surface where nothing but cratering and “mass wasting” processes seem to have been going on for eons. …
What is the difference between Ganymede and Callisto?
Ganymede and Callisto are planet-sized moons of Jupiter, with surfaces composed of a mixture of dark dust and bright ice. Similar in size, they both have interiors of half ice and half rock/metal, but Ganymede’s interior appears to be segregated by density, while Callisto’s interior is mostly mixed.
What are the physical features of Ganymede?
Overview. Ganymede is the largest moon in our solar system and the only moon with its own magnetic field. The magnetic field causes auroras, which are ribbons of glowing, electrified gas, in regions circling the moon’s north and south poles. Ganymede has large, bright regions of ridges and grooves that slice across older, darker terrains.
Why is Ganymede the largest moon in the Solar System?
Ganymede is the largest moon in our solar system and the only moon with its own magnetic field. The magnetic field causes auroras, which are ribbons of glowing, electrified gas, in regions circling the moon’s north and south poles. Ganymede has large, bright regions of ridges and grooves that slice across older, darker terrains.
Where is Ganymede’s magnetic field located on Jupiter?
Ganymede’s magnetic field is embedded inside Jupiter’s massive magnetosphere. A 3D model of Jupiter’s moon Ganymede, the largest moon in the solar system. Credit: NASA Visualization Technology Applications and Development (VTAD) › Download Options
