The universe is estimated to be about 14 billion years old.
How old is the universe?%0D%0A%0D%0A(1 point)%0D%0AResponses%0D%0A%0D%0Ainfinitely old%0D%0A%0D%0Ainfinitely old%0D%0A%0D%0Aover three trillion years old%0D%0A%0D%0Aover three trillion years old%0D%0A%0D%0Aabout 400 billion years old%0D%0A%0D%0Aabout 400 billion years old%0D%0A%0D%0Aabout 14 billion years old%0D%0A%0D%0Aabout 14 billion years old
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