Does anyone on HN now have much experience with weather balloons? How much preparation do you need to do to launch? I assume you'd have to inform the relevant authorities, has that process become more onerous after the Chinese balloon incident? What is a launch like? How long after launch do you get usable data?
Edited to add: a flagged comment mentioned GitHub. I guess I always think of Git first, and "hub" barely registers. Pornhub somehow is the opposite for me. It may have been intended as an insult, but that comment made me think, thank you random Internet person.