"The booster for the world's most powerful rocket, NASA's Space Launch System (SLS), which will power the agency’s astronauts on the journey to Mars, will fire up for a major ground test at 10:05 a.m. EDT (8:05 a.m. MDT) Tuesday, June 28, at Orbital ATK Propulsion Systems’ test facilities in Promontory, Utah.
"This is the last time the booster will be fired in a test environment before the first test flight of SLS with NASA's Orion spacecraft, known as Exploration Mission-1 (EM-1), in late 2018.
Think about it, Voyager one and two will live long after the extinction of the human race. Practically until the end of the universe, unless they crash into some unknown body in a few million years.
