Eli5 How did people figure out how old the universe is?

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I know it’s definitely very complicated but I’m very curious

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Anonymous 0 Comments

We haven’t. To our current knowledge we know it’s *at-least* X years old. James Webb actually stumbled onto some ancient galaxies recently that will bring into question all the stuff we know so far on the subject though.. so

The only certainty about the universe at the moment is that we’re in the baby steps of even understanding it. As of right now you could think of earth and humanity as a bit traveling through an oceanic fiber optic line. It’s there.. in theory it’s real. But in terms of what it “knows” about its surroundings it’s at the whim of something bigger. It’s hard to explain in a way a five year old could get with words. Diagrams would be way easier but as simple as it can be put.. our estimates of the age of our (known) universe is always changing/evolving.

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