Space Mountain was a ride originally dreamed up ... and features the first onboard audio system synced to attraction music. That same audio system would be implemented for the next iteration ...

which was a very unique take on Space Mountain at the time, featuring music by the Red Hot Chili Peppers. And then in 2009, Disneyland introduced Space Mountain Ghost Galaxy, which was a Halloween ...

When the ride opened on Jan. 15, 1975, an Apollo moonwalker was its first passenger, NASA's insignia was on display and Space Mountain was dedicated to opening the new frontier. "We astronauts are ...