Atlas 5/Cygnus NASA TV broadcast

Towering more than 20 stories tall, the 8-million-pound mobile gantry at the Atlas 5 rocket’s launch pad at Vandenberg Air Force Base, California, was retracted into position late Friday for liftoff of NASA’s InSight mission to Mars.

A commercial cargo craft owned and operated by Orbital ATK wrapped up a two-day journey to the International Space Station on Tuesday, delivering ice cream and pizza for the lab’s six-person crew and hardware for a slew of research experiments, including CubeSats slated for orbital deployments in the coming weeks.

Marking United Launch Alliance’s first rocket flight in 2017, beginning its year of national security and science-enabling missions, the Atlas 5 rocket departs Cape Canaveral carrying the SBIRS GEO Flight 3 satellite.