Close-up view of the liftoff of the Shuttle Challenger on mission STS-51L taken from camera site 39B-2/T3. From this camera position, a cloud of grey-brown smoke can be seen on the right side of the Solid Rocket Booster (SRB) on a line directly across from the letter "U" in United States. This was the first visible sign that an SRB joint breach may have occured.
NASA; derived by <a href="https://en.wikipedia.org/wiki/hu:User:Bcs78" class="extiw" title="w:hu:User:Bcs78">Bcs78</a> at <a href="https://en.wikipedia.org/wiki/hu:" class="extiw" title="w:hu:">Hungarian Wikipedia</a>
This file was derived from: <a href="//commons.wikimedia.org/wiki/File:Challenger_-_GPN-2000-001347.jpg" title="File:Challenger - GPN-2000-001347.jpg">Challenger - GPN-2000-001347.jpg</a><br>