No, Rock 'n' Roller Coaster Starring Aerosmith is significantly faster than Space Mountain. At Walt Disney World in 2026, Space Mountain reaches a top speed of only 27 mph (43.5 km/h). Its perceived speed is much higher because the ride takes place in near-total darkness, where the lack of visual cues makes every turn feel more intense. In contrast, Rock 'n' Roller Coaster features a high-speed launch that catapults guests from 0 to 57 mph (92 km/h) in just 2.8 seconds. Additionally, Rock 'n' Roller Coaster includes three inversions (loops and corkscrews) and high G-forces, whereas Space Mountain is a "wild mouse" style coaster with no inversions and a focus on sudden drops and sharp turns. While both are iconic "dark" coasters, Rock 'n' Roller Coaster is the undisputed heavyweight for pure velocity and mechanical intensity, whereas Space Mountain relies on atmosphere and nostalgia for its thrills.