Seventy three seconds after take off, the Challenger Space Shuttle encounters an unexpected disaster. Find out more in this clip from I Was There. | HISTORY

86K views · 1.7K reactions | "It is the worst disaster in the history of the American space program." ABC News coverage from this day in 1986, when seven astronauts died as the space shuttle Challenger exploded after liftoff from Cape Canaveral. https://abcn.ws/310q57b | ABC World News Tonight with David Muir | Facebook

633K views · 3K reactions | FROM THE ARCHIVES: Today marks 33 years since the Space Shuttle Challenger exploded, killing all seven crew members on board. “It happened just over one minute into flight,” NBC’s Dan Molina reported that day on NBC Nightly News with Lester Holt. “From mission control: silence.” | NBC Nightly News with Tom Llamas | Facebook

638K views · 5.5K reactions | On the 33rd anniversary of the Space Shuttle Challenger disaster, we remember the 7 crew members killed. We take a look back at Peter Jennings' reporting on the explosion on January 28, 1986. | Good Morning America | Facebook