Multiple choice general knowledge science & technology

An official countdown for a shuttle launch begins at:

  1. T minus 50 hours

  2. T minus 43 hours

  3. T minus 24 hours

  4. T minus 8 hours
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The official NASA countdown for shuttle launches began at T minus 43 hours. This marked the start of the carefully sequenced pre-launch checklist. The countdown includes built-in holds where preparations can be completed or issues addressed.

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