Firefly was an American space western TV series created by writer and director Joss Whedon that ran for only 14 episode before getting cancelled.
The show explores the lives of a group of people who fought on the losing side of a civil war and who now make a living on the outskirts of society, as part of the pioneer culture that exists on the fringes of their star system.
Much like Babylon 5 I watched a few minutes of this back in the day and lost interest almost straight away. And I managed to maintain this indifference despite being told it was fantastic on a fairly regular basis and also being something of a fan of Whedon's Buffy\Angel work! I can't explain it other than the fact that however good the writing may have been, the very idea of a space western is so obvious and trite as to induce yawns even thinking about it.
The failure to engage is mine, I'm sure, and I'll even concede it must have something going on for it to have such a passionate fan base and to still be held in such high regard. However I'm never going to watch though.
All that said; it does have some very nice Spacesuits... with neither chaps or a pair of spurs in sight.
Update - Helmets with top-lights and armoured suits are from Soldier (1998) and yellow suits are from Storm Catcher (1999) Pointy chinned helmets with side-lights are from......?