Apollo was a special space mission that happened a long time ago. It was important because it helped humans go to the moon for the first time ever!
Now, when you see a picture of the moon, you might think it's really close to Earth. But actually, it's very far away. So the astronauts and scientists who worked on the Apollo mission had to come up with special technology to help them get to the moon.
One important type of technology they used was something called "real time" communication. This means that the astronauts could talk to people back on Earth, and vice versa, just like when you talk on the phone or video chat with your friends or family.
But because the moon is so far away, the "real time" communication wasn't always instant. Sometimes, there was a delay between when the astronauts said something and when the people on Earth heard it. This delay could vary from a few seconds to several minutes.
Even though there was a delay, the fact that the astronauts and people on Earth could communicate in real time was really important. It meant that if something went wrong, the people on Earth could give the astronauts instructions on what to do to fix it. And if the astronauts had questions or needed help, they could get it right away.
Overall, the Apollo mission was a really big deal because it helped humans go to the moon for the first time ever. And real time communication was just one of the many special technologies that helped make it happen.