Map of the World, Map of the Universe

Cosmic Microwave Background of the Universe, age: 380,000 years old

Cosmic Microwave Background of the Universe, age: 380,000 years old

 

Map of the World, age 4.54 Billion years

Map of the World, age 4.54 Billion years

… and a video that explains that the big bang wasn’t necessarily the beginning. My question continues to be, if the universe is expanding, what’s it expanding in?

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