The actual plots of Space1999 were pretty laughable but I don’t think the production design has ever been beaten, even it today’s shows. The sets and vehicles look fully functional, even the clothes look perfectly wearable despite being very 70s. Contrast this with Star Trek, with weird consoles and uniforms that look uncomfortable.
The theme is, of course, beyond reproach. I like to imagine the producers couldn’t decide between epic sci-fi chords, funk, and jangly surf guitar so the composer just said screw it and did all three.