Well, that’s how I feel about the mere idea of going into space...nuts!
That said, I wouldn’t be going anyway because I’m too old, claustrophobic (couldn’t be in submarine, either) and anyway this has nothing to do with me. I think it’s a great and necessary initiative, though.
That said, I’m voting for Space Force Astronaut, or Astro for short.
Space forces are actually missiliers and people managing space navigation and spy sattelites. They aren’t a sort of marines storming outer planets and shooting aliens.
Russian military pioneered space forces at the time now mostly merged with Air Force.
Taking it into account it makes sense to copy the structure from AF. Replace ‘air’ with ‘space’ if you want the hype but I think it would sound comic.