This photograph was taken during the static test firing of the DM-2 (Demonstration Motor) for the Solid Rocket Booster (SRB) at the testing ground of Thiokol Corporation near Brigham City, Utah. As one of the major components of the Space Shuttle, SRBs provide most of the power, their combined thrust some 5.8 million pounds, for the first two minutes of flight.

Credits - NASA