text:  History happened here for 100 years. 5, 4, 3, 2, 1, and liftoff of the space shuttle Discovery with the Hubble Space Telescope, our window on the universe. Mission Control, Houston. Roll program. Roger roll, Discovery. The roll maneuver puts the vehicle in the top of the launch plane. Baltimore has been listening for 100 years. Talk Radio 680 WCBM.