How does a satellite help us?
Read lots, and take good notes.
http://www.google.com/search?q=uses+for+satellites&oq=uses+for+satellites&aqs=chrome..69i57.3864j0j7&sourceid=chrome&es_sm=119&ie=UTF-8
http://www.google.com/search?q=uses+for+satellites&oq=uses+for+satellites&aqs=chrome..69i57.3864j0j7&sourceid=chrome&es_sm=119&ie=UTF-8