Physics, 25.05.2021 23:00 allytrujillo20oy0dib
After the big bang started the universe 13.78 billion years ago, the universe began to rapidly expand. This rapid expansion caused the universe to cool
down into a network of gaseous clouds composed mainly of which element?
O Oxygen
Hydrogen
O Neon
O Carbon
Answers: 3
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After the big bang started the universe 13.78 billion years ago, the universe began to rapidly expan...
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