Satellite is probably the most useful invention since the wheel. have the capability to let you talk with someone across the nation or let you close a business deal through video communication. Almost everything today is heading towards the use of , such as telephones. At&t has used this communications satellite (top right) ever since the late 1950s. TVS and radios are also turning to the use of satellites. RCA and Sony have released satellite dishes for Radio and Television services. New technology also allows the military to use satellites ....