How do we know that the universe is about 14 billions year old? I am having a hard time understanding it, how we can measure (the age and size) of something that we are not able to grasp?
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We just look at space for a while, long enough to see about how fast things are moving apart and then we play it in reverse until we can’t reverse it any further. Kind of crazy that the universe is as young as it’s indicated to be… All things considered
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