Ridiculously catchy late-70s disco single by future Phantom of the Opera star Sarah Brightman, then a teenager, and the Hot Gossip dance troupe from The Kenny Everett Video Show. Not exactly sure what a bunch of dancers had to do with the recording of this ditty, but I can sure see why they were in the video. From the Wikipedia entry about the song:

The song is a lightweight space disco track that cashed in on the media hype surrounding the original Star Wars film: the lyrics include the lines “And evil Darth Vader has been banished to Mars” and “Or are you like a droid, devoid of emotion”. The song also samples music from Star Wars and Thus Spoke Zarathustra (from 2001: A Space Odyssey). Many of the lyrics contain mild sexual innuendo; for example, “Take me, make me feel the force”. Other television and film science fiction references are “Flash Gordon’s left me, he’s gone to the stars”, “What my body needs is close encounter three”, and “Fighting for the Federation” and “Static on the comm - it’s Starfleet Command” (both Star Trek, or the Federation from Blake’s 7; alternatively, “the Federation” and “Starfleet Command” are evident references to Starship Troopers).