Ganymede was formed from coalescing volcanic eruptions from jupiter, striking meteorites and moonlets into one another.
Yes. Ganymede is actually larger than the planet Mercury.
The biggest moon is "Ganymede" which is a moon of Jupiter.
Jupiter's largest moon, Ganymede, is as big as the planet Mercury.
there is no moon which is larger than Ganymede in our Solar System. Ganymede is the largest natural satellite (moon) in our Solar System so far to be discovered.
We do not know for sure but we do not think so.
Ganymede
Ganymede is a moon
Ganymede is about half the size of the Earth. It has a radius of approximately 2,635 km whereas the Earth's radius is 6,371 km.See link for size comparison
It might be tidaly heated like io and europa some scientests belive ganymede is tidally heated so it may have a subsurface ocean
Jupiter's moon Ganymede is as big as Mercury but is classified as a moon because it orbits Jupiter rather than orbiting the sun directly. Planets are celestial bodies that orbit the sun directly, while moons orbit planets. Ganymede's orbit around Jupiter classifies it as a moon rather than a planet.
Ganymede, the moon of Jupiter, is in orbit around Jupiter so its transit around the Sun would be the same as Jupiter's, about 11.8 Earth years. 1036 Ganymede, the asteroid, has an orbital period of about 4.34 Earth years.
Answer is an estimate using mean orbital radius Europa 670,900km Ganymede 1,070,400km So their closest estimated point would 399,500km (not calculating Europa's furthest distance to Jupiter with Ganymede's closest when they're in astronomical alignment)