Light pollution is likely the least of our worries once megaconstellations ー systems of thousands of communication satellites ー are constructed. Megaconstellations will be placed within the Low Earth Orbit, where other satellites and space junk reside. Experts are concerned that these megaconstellation satellites, after colliding with untracked debris, might contribute to more debris in the night sky, potentially setting off a chain reaction similar to that of a Neal Stephenson novel.
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Kai Cheng’s professor had a brilliant scheme. In his first lecture, he promised that each lecture would feature a “Lie of the Day”. But why? It made his students more attentive and analytical, poring over every detail of his lecture and making sense of why things were true. It was such a powerful teaching method that his students digested his most technical lectures quite easily because they tried so hard to catch his lie. The kicker? There was no lie in that first lecture; he had lied about that too! Read full article here