Two-body solution and ellipses

Stephen Wolfram answers general questions from his viewers about science and technology as part of an unscripted livestream series, also available on YouTube here: https://wolfr.am/youtube-sw-qa

Topics: Three-body problem and computational irreducibility - Climate and radiation on planets with multiple suns - Cherenkov radiation and why it doesn't break relativity Proton decay, particle physics and "how bad would it be?"