Answer: aoks

AnswerCrossword Clue
AOKS

NASA responses

AOKS

NASA approvals

AOKS

NASA go-aheads

AOKS
Astronaut's thumbs-ups
AOKS
Green lights in space, so to speak
AOKSNASA nods
AOKSArdent affirmatives
AOKSAstronauts' affirmatives
AOKSHigh "Si!"s?
AOKSNASA thumbs-ups
AOKSLaunchpad thumbs-ups
AOKSNASA affirmatives
AOKSAstronaut affirmatives
AOKSAstronauts' answers.
AOKSAstronauts' messages.
AOKSGood reports from astronauts.
AOKSAstronaut's responses.
AOKSAstronauts' "All's-well" calls
AOKSNASA green lights
AOKS"Thumbs-up" responses
AOKS"All systems go" signals
AOKSInformal approvals
AOKSPositive signs of life in outer space?
AOKSThumbs-up responses
AOKSBreezy assents
AOKSApprovals
AOKSSpace-age affirmatives
AOKSAstronauts' responses