Pigs In Space was a recurring sketch on The Muppet Show in the late 1970s. For those who've never seen an episode, It was a broad parody of shows like Star Trek, Space:1999, or Buck Rogers, and could have been an inspiration for Futurama's Zapp Brannigan. Each installment showed the latest exploits of the spaceship Swinetrek and its crew:
The Muppet Show's guest of the week would usually make an appearance as well.
In-universe, did the sketch ever establish who launched the Swinetrek and who the crew worked for? In other words, was there some Pig version of the Federation? Or some planetary government? Or was the Swinetrek privately owned and operated?
In short, why are there... PIIIGS... IIIN... SPAAAAAAAACE?