The fuel set to propel NASA’s moon crew is notorious for leaking. So why use it?

By Jackie Wattles, CNN (CNN) — If all had gone according to plan, four astronauts might have been returning just this week from a history-making, 10-day slingshot trip around the moon. Instead, NASA’s engineers have been grappling with the rocket and fuel meant to propel the mission, called Artemis II, troubleshooting an all-too-familiar problem. Just