ELI5: Explain Like I'm 5

Apollo abort modes

Okay kiddo, you know how sometimes things don't go as planned and you have to come up with a backup plan? That's kinda like what Apollo astronauts did when they were flying to the moon.

They had a whole bunch of different plans just in case something went wrong. Those backup plans were called "abort modes". Think of them like different ways to escape from danger.

For example, if the spacecraft had a problem right after launch, the astronauts could use the "Abort to Orbit" mode. That means they would stop trying to go to the moon and instead just orbit around Earth until they figured out what went wrong.

If something went wrong later in the mission when they were on their way to the moon, they could use the "Trans-Lunar Injection Abort" mode. That means they would turn around and come back to Earth instead of continuing on to the moon.

And if something went really wrong and they had to get out of the spacecraft in a hurry, they had the "Lunar Module Abort" mode. That's where they would quickly climb into a small spaceship called the Lunar Module and use it to fly back to Earth.

Each abort mode was like a backup plan, just in case something went wrong. And because the astronauts had these plans, they were able to come home safely on every Apollo mission.