If you've been under a rock for the past 50 years you might not have realized how much the visions of this man have changed your life. The most prominent would be the geosynchronous com satellite. There is a very high probability that nearly all of the cable TV you watch is from sat feeds, and of course DSS is all sat. Your GPS unit works via geo-sync sats. So does your sat-phone, if you've got some spendy need for one.