ELI5: Explain Like I'm 5

European Geostationary Navigation Overlay Service

The European Geostationary Navigation Overlay Service (EGNOS) is like having a really good map to help you find your way around. Imagine you're trying to find a toy store in a new town, but you don't have a map. You might get lost and not know which way to go. But if you have a good map, you can see where the toy store is and which roads to take to get there.

EGNOS is a map that helps airplanes and boats navigate. It sends signals from satellites in space to the plane or boat telling it where it is and which direction to go. This helps the pilots and captains of the plane or boat know where they are, even if they can't see the ground or the horizon very well.

EGNOS works by using three different satellites in orbit around the Earth. These satellites send signals to the airplanes and boats, which tell them where they are and how to get to their destination. The signals are very accurate and help the planes and boats know exactly where they are at all times.

This is important because it helps keep the planes and boats safe. If a plane or boat doesn't know where it is, it might accidentally fly into a mountain or crash into another plane. But with EGNOS, the pilot or captain knows exactly where they are and can avoid these dangers.

EGNOS is also helpful for people who like to hike or camp in the wilderness. They can use EGNOS to help them find their way around and make sure they don't get lost. It's like having a map and a compass that always work, no matter where you are!

In summary, EGNOS is a really good map that helps airplanes, boats, and people know where they are and how to get to their destination. It uses signals from satellites in space to do this, and it helps keep us safe and on track!