Second time was not the charm for the first-ever launch of NASA's towering moon rocket.
A leak in the rocket's core stage liquid hydrogen fuel line prevented NASA from launching its Space Launch System rocket and Orion capsule Saturday on an uncrewed mission around the moon. The launch was set for 2:17 p.m. ET from Kennedy Space Center in Florida, but ground teams discovered the leak hours earlier when the rocket was being fueled for launch.
After trying several measures to mitigate the leak, launch director Charlie Blackwell-Thompson called off the launch around 11:18 a.m.
