It's a universal consensus that Space Mountain is the absolute most terrifying ride at Disney.*
Because it's not just a roller coaster, it's a roller coaster IN THE DARK!
Which makes for a boring Vine (sorry), but a shit scary ride.
The only time the lights are on is when the roller coaster car ca-chunk-ca-chunks its way to the top of the track and you're simultaneously dying of anticipation.
And then BOOM! You zoom through pitch-black space without knowing what twists, turns, or drops are about to happen to your unsuspecting body.