Explained Simply
A rocket launches when its engines make enough thrust to lift it off the ground.
A rocket launch starts long before the engines ignite. Engineers check fuel systems, weather, computers, and safety conditions. When everything is ready, the countdown begins.
- Fueling: The rocket is filled with the fuel and oxidizer it needs.
- Checks: Teams confirm that the rocket and pad are working properly.
- Ignition: Engines start and build power.
- Liftoff: The rocket rises when thrust becomes stronger than its weight.
The first moments of launch are intense because the rocket must fight gravity while staying stable and on course.
Watch & Learn
Did You Know?
Some launch countdowns can pause automatically if a system check fails.