1807: London's Pall Mall became the first street to be illuminated by gaslight. 1878: The first telephone switchboard was installed in New Haven, CT. 1884: Danish physicist Auguste Piccard, who pioneered high altitude balloon and deep sea vehicle research, was born. 1915: The U.S. Coast Guard was created by an act of Congress. 1960: The first wire photograph bounced off the moon by the U.S. Navy was transmitted from Hawaii and received at Washington, D.C. 1986: The space shuttle Challenger exploded 73 seconds after liftoff from Cape Canaveral, killing all seven crew members: flight commander Francis R. "Dick" Scobee; pilot Michael J. Smith; Ronald E. McNair; Ellison S. Onizuka; Judith A. Resnik; Gregory B. Jarvis; and schoolteacher Christa McAuliffe.