US-Soviet competition for spaceflight supremacy. Play The Space Race trivia solo to sharpen your knowledge, or challenge a friend head-to-head in Trivia Tango — every question comes with an explanation so you learn as you play. Questions span every level, from easy warm-ups to expert-level stumpers, so there's a real challenge here however much you already know.
A mix of easy, medium and hard — questions run from warm-up to expert, so there's a real challenge at every level. Think you know the answers? Play to find out.
This country launched Sputnik 1, the first artificial satellite, in 1957.
Difficulty: EasyThis maneuver, first achieved by Gemini 6 and 7 in 1965, was essential for Apollo Moon missions to succeed.
Difficulty: MediumThis weight measurement unit represented the spare capacity available on Saturn V, called payload margin.
Difficulty: HardThis American astronaut became the first human to walk on the Moon in 1969.
Difficulty: EasyThis mission mode, selected in 1962, allowed Apollo to reach the Moon using a smaller rocket than direct ascent would require.
Difficulty: MediumThis constraint called pogo shutdown limited Saturn V first stage engines to prevent destructive oscillations.
Difficulty: HardThis Soviet cosmonaut became the first human to travel into outer space in 1961.
Difficulty: EasyThis iconic photograph, showing Earth rising above the lunar horizon, was taken during Apollo 8 in 1968.
Difficulty: Medium