Lunar Grey Crater — 2 museum-grade prints in this palette. Apollo 13's oxygen tank explosion on 13 April 1970 forced an abort of the planned Fra Mauro landing and converted Lunar Module Aquarius into a lifeboat for three crew members over five days twenty-two hours. Mission Control and the crew improvised power, water, and carbon-dioxide removal procedures that became case studies in aerospace operations. Apollo 8 was the first crewed mission to leave Earth orbit and circle the Moon, completing ten lunar revolutions in December 1968. Bill Anders' Earthrise photograph — Earth rising above the lunar horizon — became one of the most reproduced images in history and helped galvanize the environmental movement.