Earth is just one of the planets that revolve around the sun in the solar system, and the sun is just one of billions of stars within the milky way galaxy. the milky way is one of thirty galaxies in a cluster of galaxies called the local group. the local group is just one cluster within a super-cluster called the virgo super-cluster. and finally the virgo super-cluster is just a tiny part of the entire universe. besides stars, planets, and moons, which other object(s) can also be found in the milky way galaxy? a) gas b) comets c) asteroids d) gas, comets, and asteroids