Here's some Space Mountain fact for your consideration:
The Official opening date is January 15, 1975
Former sponsors - RCA (remember the RCA dog at the entrance?) & Fed Ex, There is no current sponsor
The top speed - 27 miles an hour [TOP speed, the average speed is less]
Biggest drop - 18 feet
The Main Lift is 150 feet long [not high].
There are 2 tracks, identical in a mirrored way, like your hands, A side is 3186 Ft, and B side is 3196 Ft [in order to pass by the other, one must be slightly longer]
You can see the Main Lift [both sides], Departure B side, and most of the B side track [much easier with lights on] from the Tomorrowland Transit Authority
A few of those spires up top are radio antenna
Each side has 15 trains, 13 maximum at a time, numbered 1-16 A side, 17-31 B side, there is no train 13
When the trains are cold, they get cycled at 29 second intervals, as they warm up, that interval goes down to 21 seconds
When cold, the length of the trip is about 2:40, when warm it's about 2:23 [times variable on the total weight of the passengers]
The heavier the load, the faster it goes
Empty seats are adjusted for, 1 - no different, 2 - 4 zones between trains, 3 - 6 or 8 zones between trains, 4 or more - 8 zones between trains
Theoretically, the hourly number of guests through would be 2,057 at 21 second intervals. The goal is around 1775 [this number changes pretty often], so for anyone doing the math, if we were to say that on average the park is open 12 hours [busy times more, slow times less, give or take], that's over 7.5 million people a year
To run Space Mountain at full capacity, right now, it takes 13 cast members, not including those present to handle breaks