Crossword puzzle clue "early nasa effort"

Here are the possible solutions for early nasa effort clue

Answer
Clue
Relevancy
apolloone
Clue
Early NASA effort
Ill-fated NASA effort
prework
Clue
Effort before the effort
Definition
to work beforehand
agenas
Clue
Early NASA rockets
apollo
Clue
Early NASA program
Definition
(Greek) a large tropical butterfly
apollos
Clue
Early NASA missions
Definition
APOLLO, (Greek) a large tropical butterfly
mariner
Clue
Early NASA probe
Definition
a sailor
wernher
Clue
Big name in NASA's early history

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