6 things to know about the first space shuttle flight

Back on April 12, 1981, the space shuttle roared to life for the first time. Columbia lifted off from Kennedy Space Center carrying two astronauts – a moonwalker, John Young, and a rookie, Bob Crippen.

See it: Satellite images show Baltimore bridge before and after collapse

Maxar satellite images show the Francis Scott Key Bridge above the Patapsco River taken before the devastating crash. Photos taken around noon on Tuesday show the container ship under parts of the collapsed bridge and the search efforts underway around the crash site.