There are numerous good options, including: Mars, our colder ... Jupiter’s third Galilean satellite, Ganymede. With the recent discovery of water vapor in its thin atmosphere, it might just ...

Ganymede is Jupiter's largest moon and is also the largest moon in the entire solar system. It is bigger than both Mercury and dwarf planet Pluto and only slightly smaller than Mars. The moon ...

"If we find bacteria on Europa, or Mars or elsewhere ... an ocean of liquid water compared to rock floating on magma on the Earth." This protective layer could make Ganymede "a great destination ...

Mars has two moons ... It's Unusually Large Compared to Its Planet The Moon is far from being the biggest satellite in the solar system. That title belongs to Ganymede, one of the moons of ...

"We'll explore Jupiter and its icy moons, which are Europa, Ganymede and Callisto with a ... Jupiter is second only to Mars as the most visited planet in the solar system. NASA's Pioneers 10 ...