The pictures on Sky are transmitted by sending a signal up to the Satellite which is then beamed down to your dish the Satellite is in orbit 22,000 miles or so up in the air ! I can remember reading ages ago that it takes approx 3.5 seconds to get to your telly. Radio signals are only coming from less than 50 miles away, the commentary reaches Carlisle on a phone line, so you hear that just about the actual time it happens.