Earth observation: How does it work?

Earth observation is like having a giant eye in the sky that watches our planet and tells us what’s happening down here.

Imagine you're playing hide-and-seek, and you have a friend who can see everything from the top of a tall building. That friend would tell you where everyone is hiding, even if they’re behind trees or under blankets. Earth observation works in a similar way, satellites, like those giant eyes, circle high above Earth and take pictures or measurements.

These satellites have special cameras that can see things we can’t always see with our own eyes, like how hot the ground is, how much water there is in a lake, or even how tall trees are. They send this information back to computers on Earth, which turn it into maps, weather forecasts, and even help scientists understand how climate change is affecting our planet.

Sometimes you need more than just one view, maybe you want to see the whole world at once, or track something over time. Satellites can do that too! They’re like a group of friends watching from different places, all sending messages back so we know what’s going on in every corner of Earth.