NASA announced it will make another attempt to launch the Artemis I lunar mission on Saturday, after calling off the launch on Monday due to an engine issue.
The space agency is working toward the debut of its Space Launch System (SLS) rocket and Orion capsule, for what would be a more than month-long journey around the moon.
On Monday, NASA was unable to resolve a temperature problem identified with one of the rocket’s four liquid-fueled engines, discovered with under two hours to go in the countdown. NASA’s manager of the SLS program John Honeycutt said during a press conference on Tuesday that the agency believes the engine issue was due to a faulty sensor, given a data analysis that showed propellant was flowing as expected.
Honeycutt noted that the rocket’s technical team is continuing to review the data and still needs to “polish up on our plan” for making a Saturday launch possible. If NASA needs to roll SLS off the launchpad to get access to the engine sensor, that would likely mean a delay of weeks or months before another launch attempt.
“Replacing the sensor at the launchpad would be tricky,” Honeycutt said.