Space Opera - Edward E. Simbalist and A. Mark Ratner and Phil McGregor
Take Traveller, bloat it up a lot, make sure you have tables for as much as you can think of, including double level fatigue and dropping the ball.
This comment also nails it :- "the barely sketched out campaign milieu is a mish-mash of animal-men, vulcans, jedi, lightsabres, space nazis, space commies, martians-from-War-of-the-Worlds and implacable hiveminded insectoids." http://forum.rpg.net/showthread.php?461973-Necro-FGU-s-Space-Opera-and-other-runts-of-the-litter
Some very dodgy writing and concepts, but it has a certain charm, and some of the stuff you could have enhanced Traveller with..more detailed character enlistments, some effects of the planet that your character has come from, etc. How to bias stat rolling to make players likely to have higher level stats than the ordinary by using d100 to roll d20, that sort of thing.
Much weapons and gear, too. The middle game I guess you could call it of Traveller and Spacemaster from the time.
Worth a browse for entertainment and occasional useful part.
3 out of 5
The above link is the complete list of post from this blog, updated each week, if you want to browse like that rather than search.
This list is quite long, and has become longer than I ever thought so in the interests of loading speed it is now situated elsewhere.
Similarly I am working on a simple website to browse by author that combines Free SF Reader and Not Free SF Reader that is extremely bare bones now, and can be found at the second URL above.