Disney World’s Space Mountain opened 40 years ago today. In honor of the anniversary, check out what the ride looks like in a new light.

John Frost of The Disney Blog came across Space Mountain while it was out of service, or “101” in Disney’s secret code language. All the lights were on, showing the complex track and glimpses of the guts of the ride, which kind of ruins the experience — or, if you’re a roller coaster geek, gives you some idea of how it works. Frost captured this video from the PeopleMover (a tram running alongside the ride), showing the coaster in a way it wasn’t meant to be seen:

Continue reading at Mental Floss