Blasting off from Tomorrowland at Magic Kingdom Park, Space Mountain goes gold for the 50th anniversary of this rip-roaring roller-coaster ride in the dark. Mickey Mouse and the Gang along with Astronaut Donald Duck join Walt Disney World Ambassadors Shannon Smith-Conrad and Serena Arvizu in celebration of 50 years of launching unforgettable memories on this out-of-this-world attraction at Walt Disney World Resort in Lake Buena Vista, Fla. (Olga Thompson, Photographer)

Blasting off from Tomorrowland at Magic Kingdom Park, Space Mountain goes gold for the 50th anniversary of this rip-roaring roller-coaster ride in the dark. Mickey Mouse and the Gang along with Astronaut Donald Duck join Walt Disney World Ambassadors Shannon Smith-Conrad and Serena Arvizu in celebration of 50 years of launching unforgettable memories on this out-of-this-world attraction at Walt Disney World Resort in Lake Buena Vista, Fla. (Olga Thompson, Photographer)

Blasting off from Tomorrowland at Magic Kingdom Park, Space Mountain goes gold for the 50th anniversary of this rip-roaring roller-coaster ride in the dark. Mickey Mouse and the Gang along with Astronaut Donald Duck join Walt Disney World Ambassadors Shannon Smith-Conrad and Serena Arvizu in celebration of 50 years of launching unforgettable memories on this out-of-this-world attraction at Walt Disney World Resort in Lake Buena Vista, Fla. (Amy Smith, Photographer)

Blasting off from Tomorrowland at Magic Kingdom Park, Space Mountain goes gold for the 50th anniversary of this rip-roaring roller-coaster ride in the dark. Mickey Mouse and the Gang along with Astronaut Donald Duck join Walt Disney World Ambassadors Shannon Smith-Conrad and Serena Arvizu in celebration of 50 years of launching unforgettable memories on this out-of-this-world attraction at Walt Disney World Resort in Lake Buena Vista, Fla. (Kenslie McGuire, Photographer)

Blasting off from Tomorrowland at Magic Kingdom Park, Space Mountain goes gold for the 50th anniversary of this rip-roaring roller-coaster ride in the dark. Mickey Mouse and the Gang along with Astronaut Donald Duck join Walt Disney World Ambassadors Shannon Smith-Conrad and Serena Arvizu in celebration of 50 years of launching unforgettable memories on this out-of-this-world attraction at Walt Disney World Resort in Lake Buena Vista, Fla. (Amy Smith, Photographer)

Blasting off from Tomorrowland at Magic Kingdom Park, Space Mountain goes gold for the 50th anniversary of this rip-roaring roller-coaster ride in the dark. Mickey Mouse and the Gang along with Astronaut Donald Duck join Walt Disney World Ambassadors Shannon Smith-Conrad and Serena Arvizu in celebration of 50 years of launching unforgettable memories on this out-of-this-world attraction at Walt Disney World Resort in Lake Buena Vista, Fla. (Kenslie McGuire, Photographer)

Blasting off from Tomorrowland at Magic Kingdom Park, Space Mountain goes gold for the 50th anniversary of this rip-roaring roller-coaster ride in the dark. Mickey Mouse and the Gang along with Astronaut Donald Duck join Walt Disney World Ambassadors Shannon Smith-Conrad and Serena Arvizu in celebration of 50 years of launching unforgettable memories on this out-of-this-world attraction at Walt Disney World Resort in Lake Buena Vista, Fla. (Amy Smith, Photographer)

Blasting off from Tomorrowland at Magic Kingdom Park, Space Mountain goes gold for the 50th anniversary of this rip-roaring roller-coaster ride in the dark. Mickey Mouse and the Gang along with Astronaut Donald Duck join Walt Disney World Ambassadors Shannon Smith-Conrad and Serena Arvizu in celebration of 50 years of launching unforgettable memories on this out-of-this-world attraction at Walt Disney World Resort in Lake Buena Vista, Fla. (Walt Disney World)