I'm guessing you meant the planet with the only moon with a THICK atmosphere, since many moons have an atmosphere, although in very small amounts. If that's the case, then the answer is Saturn, with Titan as its moon, which is the only moon that have a thick atmosphere.
jupiter
No. The only planet or moon to have a breathable atmosphere is Earth.
Saturn has the moon Titan, which has an atmosphere
The moon with the specific name 'The Moon' orbits planet Earth.
Earth is the only known planet with an oxygenated atmosphere.
Venus is the only planet that does not have a moon.
Because it is the only planet that we know of having a atmosphere
Titan, the moon of saturn, has an atmosphere. however, Triton has a very thin nitrogen one, and even the moon has one (thinner than that of mercury, so it's really not that big, but it is technically an atmosphere.)
Titan orbits Saturn
Jupiter's moon Io does not have an atmosphere. The only known moon to have an atmosphere is Saturn's moon Titan, which has a nitrogen-based atmosphere.
Yes they do. Our moon only orbits our planet - earth.
Titan, the largest moon of Saturn, is the only moon with a dense atmosphere.