ELI5: Explain Like I'm 5

Hubble volume

The Hubble Volume is a group of galaxies that are spread out in a big area all around us in space called the universe. Hubble volume helps us to understand how big the universe actually is and how far away these galaxies are from us. Think of it like a big balloon, with a lot of colorful dots inside it. All those dots are galaxies and they are far, far away from us. The Hubble Volume is like a giant map of all these galaxies in the universe.
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