Video: Delta 4 launches before dawn from California

This is the launch timeline to be followed by the Atlas 5 rocket’s ascent into orbit from Cape Canaveral with the SBIRS GEO Flight 4 satellite for U.S. military infrared reconnaissance.

NASA’s OSIRIS-REx spacecraft is about to be sealed inside the nose fairing of its Atlas 5 rocket booster for a seven-year voyage to asteroid Bennu and back to Earth on a mission to seek out clues to the origin of life and the chaotic early solar system.

An automatic alarm in the final two minutes of the Delta 4-Heavy rocket’s countdown early Saturday forced officials to delay blastoff with NASA’s Parker Solar Probe by 24 hours.