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Now you'll be able to purchase sunlight at night!
(mashable.com)
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this post was submitted on 26 Aug 2024
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I was actually thinking 🤔...hmm this would be the best way to tell some other civilization that we live in this planetary system....get a mirror big enough to point a beam out of its normal trajectory in some sort of non random fashion. Basically smoke signals using a mirror.
Humans on Earth have been transmitting radio waves into space for over a century now through various means: television broadcasts, radio communications, and radar signals.