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Millions of people watch a rock concert relayed to opposite ends of the world. A fire fighter wearing breathing apparatus spends 25 minutes in a burning building rescuing a trapped child. A prospective buyer watches as a mechanic runs a complete check on a used car. On a remote Texas ranch, water is heated with solar panels. An orthopedic surgeon analyzes the muscle movements of a victim of cerebral palsy. A student in a college dormitory spots an intruder and triggers a portable alarm. These seemingly disconnected events have all been made possible by an advanced technology that has made a radical difference in day-to-day life on earth: they are all spin-offs from NASA's space exploration programs.