How large are Jupiter's moons?

Answer 1

The sizes range from dwarf-planet size down to tiny shepherding moons among the rings. The two largest moons, Ganymede and Callisto, are 5200 and 4800 km in diameter respectively, nearly half the size of Earth. One of the smallest, Mneme, is only 2 km in diameter, and newly discovered moons are likely to be smaller still.

Answer 2

Mars has two moons, both of which are very small. Phobos masses 1x10^16 kg. Deimos masses 1.8x10^15, and is small enough that with a really good kick off its surface you could achieve escape velocity.

In comparison, earth's moon is 7.4x10^22 kg. That is seven million times heavier than Phobos. Their sizes are roughly comparable to their masses.

Answer 3

Jupiter's largest moons are much smaller than Earth's moon, with the largest moon, Ganymede, having a diameter of about 5,268 kilometers (3,273 miles). The other three largest moons - Callisto, Io, and Europa - have diameters ranging from about 3,121 kilometers to 5,263 kilometers. The remaining moons are significantly smaller, with diameters ranging from a few hundred kilometers to just a few kilometers.

Answer 4

some are bigger than the inner planets such as titan

Answer 5

The equatorial radius of the moon is 1,738.14 km,

while the equatorial radius of Mars is 3,396.2 ± 0.1 km.

Answer 6

there are 63 moons and 4 of them are big

Answer 7

deimos is 12.6km and phabos is 22.2km

Answer 8

i think Phobos i larger than Deimos