What is the purpose of having a countdown during a rocket launch?
The purpose of having a countdown during a rocket launch is to ensure that all systems are ready and that all launch personnel are in place and have completed their tasks before the rocket is ignited. The countdown also gives a clear signal to the public and to the media that the launch is about to occur. Additionally, it allows mission control to make any necessary last-minute adjustments or abort the launch if necessary. The countdown sequence typically starts with several minutes of checking systems and completing
First, the countdown has a technical function: It enables the sequential execution of several preparatory actions that must be accomplished before the launch.

It is a way of coordinating and executing a series of complex processes that need to occur in a specific order leading up to ignition. The countdown sequence covers the following stages:

1. Propellant loading: Filling the rocket's tanks with fuel and oxidizer.
2. Power-