The Universe is made of building blocks of all different sizes. Just like bricks make up houses, groups of houses make up neighborhoods, in the same way, the Earth and Moon make up a system, the Earth-Moon System is part of our Solar System our Solar System -surrounded by our Heliosphere- is part of the Milky Way Galaxy, and the Milky Way Galaxy is one of the many billions of galaxies that make up the Universe. We can organize these into different realms. Now its your turn! Help us put things where they fit best.
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