The moon is a satellite. It moves on a set path called an orbit around the earth. Anything that travels around a planet is a satellite. Rockets carry artificial satellites into space. They circle high above the earth.
While artificial satellites circle the earth, they pick up radio waves from transmitting stations on the earth. Solar panels on the satellites collect sunlight to make electricity. They use this electricity to send the radio waves back to receiving stations. The receiving stations are often thousands of kilometres away from the transmitting stations.
Today, many hundreds of satellites whirl around the earth. Each one makes life easier for people on the ground.
Picture Credit : Google
