False, major false. A galaxy is a small portion of the entire universe... it contains plants, stars, asteroids, moons are insignificant compared to it. Also, pretty much all moons are larger than planets so that wouldn't even make sense.
First off a galaxy is one of the largest things in space, besides things like galaxy clusters.
Second all planets have more mass than the moon. Since planets have more mass than a moon, it is impossible to have less mass than a moon but more than a planet.
Finally, a galaxy is made up of millions of planets and moons. So it does not make any sense nor is it even possible.
