How does GPS actually work to pinpoint your location?

GPS is like having four really good friends who tell you how far away they are, and from that, you can figure out exactly where you are.

Imagine you're playing hide-and-seek in a big park. You’re hiding, and your friend says, “I can see you! I’m 10 steps away.” That helps, but it doesn’t tell you exactly where you are, you could be anywhere in a circle around them.

Now imagine three more friends also tell you how far away they are: one says 15 steps, another says 20 steps, and the last one says 25 steps. Now you can figure out that you’re at the spot where all those circles overlap, and that’s your exact location!

GPS works in a similar way. Satellites up in space act like your friends. Each one sends a message saying, “I’m this far away from you.” Your phone listens to four of them and uses the distances to figure out exactly where you are on Earth.

It’s like having a map that updates every second, no magic, just clever math!