Welcome to the “World” (television) Television show; aired on March 23, 1975. Directed by Marty Pasetta. Entertainers perform at Walt Disney World for the opening of Space Mountain. The attraction is dedicated by former astronauts L. Gordon Cooper, Scott Carpenter, and Jim Irwin, and featured is a band composed of 2,000 instrumentalists along with daytime fireworks. Stars Lucie Arnaz, Lyle Waggoner, Tommy Tune, Scotty Plummer.