There were a host of science-related panels at Worldcon, many focusing on spaceflight. Some notes from the few I attended. Misattributions and errors possible.
Earth. We're stuck here!
James Patrick Kelly,
Jim Davidson,
Henry Spencer,
John Strickland, Jr,
Alison Wilgus
- Opening question: what's the biggest obstacle to a future in space? Turns out to be a divisive question, without about half the panel saying "the government", weirdly--blaming lack of funding, and restrictions on private ventures.
- Wilgus has a very different take. Money, sure, but to be honest: mass. It's very expensive to even practice space stuff, much less get good at it and do it at scale, because it's just so hard to get mass into even low orbit.
- Kelly says the biggest barrier to a future in space is us: the human body is not designed to go into space. Refers to radiation primarily, as well as known and unknown problems with long exposure to micro/zero-gravity.