What moons atmosphere is like earth?

Answer 1

In our solar system, there is no moon that has an atmosphere which resembles that of the Earth. Note that the oxygen content of the Earth's atmosphere is the result of photosynthesis performed by green plants, and there is no other place in the solar system that has green plants (or any other kind of life that has yet been discovered). It remains theoretically possible and perhaps even likely that there are planets and moons elsewhere in the galaxy which have atmospheres resembling that of the Earth, but they have not actually been detected, and considering the great distances involved, perhaps they never will be.

Answer 2

Titan, a moon of Saturn, has an atmosphere that is somewhat similar to Earth's in that it is mainly composed of nitrogen. It also has clouds, weather patterns, and even rain, although the rain is methane instead of water. However, Titan's atmosphere is much denser and colder than Earth's.