The largest solid rocket motor ever built for flight will help launch NASA’s Space Launch System (SLS) on deep space exploration missions. SLS is an advanced, heavy-lift launch vehicle that provides an entirely new capability for science and human exploration beyond Earth’s orbit.
SLS Five Segment Booster (FSB-1)
Launching 5.5 million pounds is impossible. Until it's not.
Video Gallery: FSB-1
Facts and History