You can bounce a #laser off of a #mirror on the #moon. Takes between 2.3 - 2.7 seconds to get back to you! Twice in a single #vine! I ❤ data
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You can bounce a #laser off of a #mirror on the #moon. Takes between 2.3 - 2.7 seconds to get back to you! Twice in a single #vine! I ❤ data
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