Answer: spacerace

AnswerCrossword Clue
SPACERACE

Competition with rockets

SPACERACE

Sputnik started it

SPACERACE

'60s competition

SPACERACE
Exploration competition started by Sputnik
SPACERACE
NASA's concern
SPACERACECompetition covering many miles
SPACERACEContest with many missions
SPACERACEOld U.S.-Soviet rivalry
SPACERACESputnik 1 launched it
SPACERACECompetition that began in 1957
SPACERACECold War competition
SPACERACEIt was launched with Sputnik