OtterKnow Kids EncyclopediaBefore a rocket blasts off into space, there is always an exciting countdown! You might have heard people say “10, 9, 8, 7, 6, 5, 4, 3, 2, 1, LIFTOFF!” The countdown helps make sure everything is perfect before the rocket launches.
During the countdown, scientists and engineers carefully check every part of the rocket. They make sure the engines are working, the fuel is loaded, and the astronauts are safe inside. If anything looks wrong, they can stop the countdown and fix the problem. When everything is ready, the engines fire up and the rocket zooms into the sky!
- Countdowns for big rockets can actually start days before the launch.
- The countdown for the Space Shuttle started 43 hours before liftoff!
- If there is bad weather, the launch can be delayed until the sky is clear and safe.
