Galaxies come in many sizes. The Milky Way is big, but some galaxies, like our Andromeda Galaxy neighbour, are much larger. The universe is all of the galaxies – billions of them!

Answer:

A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems, all held together by gravity. The Universe is all of space, matter, energy, time, and its contents, including planets, stars, galaxies, and all other forms of matter and energy

Explanation:

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