When posed the question “If solar flares cause extended GPS outages, do you feel you will be affected?” TigerNews visitors said overwhelmingly “No, I don’t use a navigation system.”

This was kind of a trick question, because it is possible that we will all be affected by a widespread GPS outage. Many more things than your car’s navigation system utilize GPS for a variety of reasons – including cellular telephone networks, traffic signals and more – including OnStar service, carrier tracking systems – and surely much, much more.