/u/SurprisedPotato's posts in /r/askscience
Are the things perfectly reasonable (at the time) things the crew of Apollo 13 might have done, which would (in hindsight) have led to disaster?
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The Kursgesagt video "End Of Space" describes a scenario where space debris destroys satellites, which become more space debris, which destroys more satellites in a runaway chain reaction, eventually making LEO satellites impossible. How close are we to this scenario?
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Was COVID-19 or something like it inevitable, given the conditions at the market in Wuhan, or were we just unlucky?
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Vaccine phase 3 trials were mostly on younger, healthy people, but rollouts are going first to older, at-risk people. What's the chance of an unpleasant surprise regarding effectiveness or safety?
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If you fired a stream of particles at one side of a black hole, making it spin faster, could you eventually make it spin so fast that something really weird happened?
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