Titan, a moon of Saturn, is the only moon in the Solar System with a thick atmosphere.
Why it is true
Titan's atmosphere is mostly nitrogen, like Earth's, and the pressure at the surface is about one and a half times ours. With such a dense atmosphere and so little gravity, a person with wings strapped to their arms could fly. The Huygens probe landed there in 2005.
Source: NASA / ESA (missão Cassini-Huygens)
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Related facts
Ganymede, a moon of Jupiter, is larger than the planet Mercury.
Mimas, a moon of Saturn, has a crater so big that it looks like the Death Star from Star Wars.
Phobos, Mars's largest moon, gets closer to the planet every year and will eventually be torn apart.
Saturn would float in water if there were a bathtub large enough.
