They help us in almost every part of our lives but do we ever think about what satellites do for us?
In the latest episode of Newsround's space week, Joe has been checking out everything you need to know about the thousands of satellites out there.
From how they help us to get around and watch TV, to using an orange to replicate how tricky it is to actually get them into space.
Don't believe us? Well check out the video below to find out - and see what a good shot he is!