migronauts

someone who works in space sometimes for extended periods. Originally used to refer to the former migrant workers turned astronauts.

In the future they will send migronauts to colonize the moon.

migronauts by menoji September 1, 2009

micronaut 

a male human with a small penis who is completely unaware or unable to accept his diminuitive size and believes he can "conquer the universe" of women

Susan: I slept with Peter last night.

Friend: Oh yeah, how was he? He seems like THE MAN about town. Does he have big one?

Susan: OMG! No, he is such a micronaut. You wouldn't even know based on how he thinks he can get women.

micronaut by freshfields April 1, 2010