The four Artemis II astronauts, returning from the world’s first crewed moon voyage in over half a century, hurtled back towards Earth on Friday as they prepared their Orion spacecraft for the final phase of their descent and splashdown in the Pacific Ocean off Southern California.On Friday afternoon, the autonomously piloted Orion crew capsule executed one last eight-second firing of its jet thrusters to fine-tune the flight course, a critical manoeuvre to ensure a safe return.Nasa’s...