Stephen Wolfram Q&A, For Kids (and others) [February 26, 2021]

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 Questions include: Why is there a size limit for a planetary body in the universe? Is the size of Jupiter the largest that is possible? - What happens to the electrons before the sun fusion occurs? - Why does it take up to 100,000 years for a photon to go from the core to the surface of the sun while only 8 minutes to reach earth? - How does one solve more-than-one electron systems? - When an atom absorbs a photon and then the same atom emit a photon... is that the same photon? - Is it true that the speed of light as we know it is an accepted assumption and the "one way" speed of light could not be calculated because the time measuring instruments can never be synced due to relativity? so we can only measure the speed of light beaming and returning from an object and assuming that the speed in both ways is the same? - So what happen to materials as metals if you cool them down in cooling fluids, for example we have Helium in a container with the metal and we cool it down to a fluid. - Dirac talk a lot about the constants of nature and our inability to explain them. Have we come any further in explaining them since his passing? - What about the triple/critical point? (i forget the name, but its the temp and pressure where a substance exists as gas & liquid & solid) - How would you suggest getting a child interested in diving deep into science and tech? Not just web programming but something real. What if the kid's parents aren't very interested themselves? Can the kid be 'saved' so to speak?