My parents were so cool for gradually getting me all of these. They all connected to >>718361598 so you could have a complete base with three different mechs. There didn’t seem to be an emphasis on conflict with the astronauts but you could imagine it if you wanted.
These and Bionicle along with MNOG and Lego Racers 1/2 were my childhood. I’ve got still got them for if I ever have kids

For me it was these mechs and these guys. I was given every set over a few years, and looking up their total cost adjusted for inflation floored me. Like over $300. Thanks mom and dad