March 12 (UPI) -- The recent, new delay in NASA's moon landing program represents the latest in a string of technical, budgetary, workforce and public perception challenges that plague the space agency, a UPI analysis shows. When flight officials pulled the Artemis II Space Launch System and Orion spacecraft off the launch pad at Kennedy Space Center on Feb. 25 after a recurrence of helium flow problems and pushed the launch back to April at the earliest, it served as another reminder of the