NASA's Orion crew vehicle successfully completes Moon flyby

NASA's Orion spacecraft has successfully completed one of the key maneuvers of its maiden journey: a flyby of the Moon during which it got as close as 81 miles to the lunar surface. This was important for a few reasons, not least because it marked a critical test for the propulsion system. Orion carried out four trajectory correction burns on its way to the Moon, but this time around, the orbital maneuvering system engine fired for 2 minutes and 30 seconds. This accelerated Orion at a rate of mo...