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Jeffrey D. Allred, Deseret News
ATK conducts avionics testing of NASAs Space Launch System flight simulation in Clearfield Thursday, April 3, 2014. The Space Launch System is NASAs new vehicle that is being built to take astronauts into deep space, including Mars.

CLEARFIELD — ATK tested its avionics on Thursday for NASA’s five-segment booster as it prepares a simulated launch for the Space Launch System from its lab in Clearfield.

The Space Launch System is NASA’s new vehicle that is being built to take astronauts into deep space, including Mars.