The Voyager Golden Record carries a small sample of uranium on its cover, placed there so that whoever finds it can measure the decay and work out how long it has been drifting — a built-in clock for a message engineered to last around a billion years. – Space Daily
- The Voyager Golden Record carries a small sample of uranium on its cover, placed there so that whoever finds it can measure the decay and work out how long it has been drifting — a built-in clock for a message engineered to last around a billion years. Space Daily
- The Voyager probes carry golden records etched with greetings in 55 languages, whale songs, and a woman’s brainwaves recorded while she thought about being in love, and the records are designed to remain playable for one billion years drifting through i Space Daily
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