What would your day be like if you woke up and there were no functioning artificial Earth satellites? All of us have become used to finding our way with GPS satellites, watching satellite TV, obtaining up to date satellite weather information, and buying gas with a credit card which is processed with a satellite transaction. The geomagnetic disturbance from a mega solar flare could produce electronic equipment all over the world to fail. If the Carrington event (1859) occurred today, it would probably disable artificial satellites and disrupt power grids.