Mercury is smaller in diameter, but not in mass. If you include dwarf planets, than it is also larger in diameter than Eris and Pluto, however once again it is smaller in mass.
Ganymede is largerthan Mercury, but has a smaller mass.
Yes. Ganymede is actually larger than the planet Mercury.
Ganymede is considered a moon because it orbits a planet and not the sun.
Ganymede is solid, as are all the moons in the solar system. However, the fact that Ganymede is a moon means that it is not a planet.
Ganymede and Io are both moons of Jupiter.
Ganymede is a moon of Jupiter. It orbits the planet at an average of 1,070,400 km
Ganymede is regarded as a moon because it orbits a planet. In order to be considered a planet it would have to orbit the sun.
Jupiter.
The various sizes of planets and satellites are the result of random collisions of assorted objects and debris, in the early years of the solar system after it condensed out of an interstellar dust cloud. Since Ganymede is a satellite of the largest planet in the solar system, Jupiter, it is not strange that it is larger than the smallest planet in the solar system.
No. Ganymede is one of Jupiter's moons. There are no volcanoes on Jupiter.
Because Ganymede is orbiting Jupiter whereas planets are orbiting the sun
No, they are not. Europa and Ganymede are two of planet Jupiter's 63 moons!