The Challenger Disaster: The Day in Pictures

Thirty years ago, the space shuttle Challenger exploded after liftoff, killing all seven people onboard—including high-school teacher Christa McAuliffe. The 25th flight for NASA's space shuttle program was to have studied Halley's Comet and deployed two satellites, Discovery News reports; McAuliffe was to have taught science lessons from space. Here are scenes from that day.