Of all the things that the iconic 50s-themed family sitcom Happy Days gave us, a spinoff centered around the relationship between a woman and an alien from the planet Ork might have been the most unexpected — but viewers sure did love it. While Mork & Mindy only lasted four seasons, with its final episode airing 43 years ago on May 27, 1982, it not only made a long-lasting mark in pop culture, but helped launch the career of one of entertainment’s most brilliant comedians and dramatic actors, Robin Williams.  Let’s travel through space and time to learn a few little-known facts about Mork & Mindy!