This is one of my all-time favorite YouTube videos ever.

Produced by Matt Melis at the Glenn Research Center, this video gives a never-before-seen glimpse into the inner workings of the Space Shuttle program via their 100+ launch cameras positioned at various locations throughout the Space Shuttle launchpad. These official NASA videos are recorded at high frame rates to be sure to include all the detail possible for monitoring glitches, debris, and perfect launch sequences. Overall, the video may be long, but it’s totally worth every second. PAY ATTENTION TO THIS ONE.