Terra is like a giant camera in space that takes pictures of our Earth all the time. It flies around our planet really fast, about 500 miles up in space. The pictures it takes show us what our Earth looks like from high up.
Terra can take pictures of different things like how much water is in the ocean, how plants and trees are growing, and what the weather is like. All of these pictures help scientists learn more about how the Earth works and what we can do to take care of it.
Terra also has other special tools on board that can help us understand things like air pollution and how climate change is affecting our planet. It's a very important satellite that helps us keep an eye on our amazing planet from way up above!