-
Sputnik 1
When Sputnik 1 was first used. -
Explorer 1
When Explorer 1 was first used. -
First human to orbit Earth
When the first human orbited Earth. -
Apollo Mission
When the Apollo Mission started. -
Gemini Space Program
When the Gemini Space Program was started. -
Space Shuttle Program
When the Space Shuttle Program was first used. -
Space X
When Space X was started.