No, the galaxy doesn’t go on forever. Let me explain – So we live on a planet Earth, in our solar system we have a few other planets and we fly around the sun. The sun is part of the Milky way galaxy which has 250 billion stars ( like our sun ) and about 100 billion planets (this is what we believe, but we are still learning ). Then we can see other galaxies which make up part of our universe. There are about 100 billion other galaxies, we find more the whole time. So I think we could say we could say the universe is infinite.
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