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what What is the purpose of having count downa countdown during ana rocket launch?

AllEvery rocket launches havelaunch has a count down, butcountdown. But what is the purpose of having a count down during a launchdoes it serve?

what is the purpose of having count down during an rocket launch?

All rocket launches have a count down, but what is the purpose of having a count down during a launch?

What is the purpose of having a countdown during a rocket launch?

Every rocket launch has a countdown. But what purpose does it serve?

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All rocket launchs willlaunches have a count down, but what is the purpose of having a count down during a launch?

what is the purpose of having count down during an rocket launch ?

All rocket launchs will have a count down but

what is the purpose of having count down during an rocket launch ?

All rocket launches have a count down, but what is the purpose of having a count down during a launch?

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