Take two. NASA readies its second launch attempt for its Artemis 1 moon mission

https://www.npr.org/2022/09/03/ [login to see] /nasa-artemis-1-launch-saturday-time-moon-mission-rocket-orion-sls
NASA workers are once again getting the agency's new moon rocket ready for its first test flight, and if all goes well the rocket will blast off during a two-hour launch window that starts at 2:17 p.m. Eastern on Saturday.

"We're going to show up, and we're going to try, and we're going to give it our best," said Mike Sarafin, NASA's Artemis mission manager, during a press briefing at Kennedy Space Center in Florida, where the 32-story-tall rocket, with a crew capsule on top, is waiting on the launch pad.

NASA's first effort to launch this rocket had to be scuttled on Monday morning after a sensor indicated that one of the rocket's four engines didn't seem to be cooling down to the proper temperature of approximately minus-420 degrees Fahrenheit.

After studying the problem and troubleshooting, officials said it's clear the engine was actually fine and a sensor was giving a false temperature reading. "We know we had a bad sensor," said John Honeycutt, program manager for this rocket at NASA's Marshall Space Flight Center in Huntsville, Ala.