Yeah try searching for “star trek socialism” on YT or wherever, you’d be surprised.
But apart from the series specifically there is at least some theorizing that space exploration is only possible after capitalism has been abolished since the energy and cooperation alone required to make it work on a meaningful scale is not possible under capitalism. We need the unleashing of productive forces that only communism can provide.
Aaaaaaand of course there are the Posadists. Google them for a good chuckle!
“This is Florida! The whole goddamn state is shaped like a gun! You can’t walk to your mailbox without tripping over three of them. God forbid you sell one to a cop!”