Just hours before the milestone Artemis II launch, a handful of technical problems nearly delayed the mission before it could even get off the pad.
Nearly six decades on from the Apollo 11 Moon landing, NASA returned to deep-space crewed exploration by sending a new lunar mission on its way.
At 6:35 p.m. ET, the rocket lifted off from Cape Canaveral as viewers worldwide watched three American astronauts and one Canadian begin their trip beyond Earth.
In the final pre-launch stretch, teams had to work through multiple issues to keep the countdown on track.
One of the most urgent concerns involved the Flight Termination System (FTS), a critical safety mechanism that enables ground controllers to transmit a destruct command if the rocket veers off its approved trajectory during ascent.
Engineers moved quickly to diagnose and resolve the FTS problem before it could force a scrub.
Another issue cropped up in the Launch Abort System, where one battery returned an unusual temperature reading.
After roughly an hour of investigation, teams determined it was likely not a battery failure but a sensor-related instrumentation problem that produced the abnormal reading.
Complications didn’t end once the spacecraft was in the air.
Not long after launch, the vehicle briefly lost communications with ground controllers about 50 minutes into the mission.
NASA Administrator Jared Isaacman said during a Wednesday press conference that contact was re-established and the spacecraft itself was not impacted.
As of Thursday, officials were still working to confirm what triggered the communications dropout.
And in a problem more commonly associated with airplanes than spacecraft, the toilet system also created an unexpected challenge.
After Artemis II began its mission, the crew was scheduled to configure the capsule’s toilet hardware.
However, the onboard toilet system developed a malfunction when a fan jammed, interfering with normal urine disposal.
“The toilet fan is reported to be jammed,” NASA spokesperson Gary Jordan stated during live mission commentary. “Now the ground teams are coming up with instructions on how to get into the fan and clear that area to revive the toilet for the mission.”
Until the fix could be carried out, the astronauts used a backup setup.
Despite the stacked list of issues, NASA managed to clear the most serious constraints in time. “It was a fix to clear the range and work the FTS. That is no longer a constraint,” NASA’s launch commentator, Derrol Nail, explained. “It’s great news. The range is green and we’re continuing with the countdown”.
Artemis II is the program’s second flight and its first crewed mission, part of NASA’s Moon to Mars initiative aimed at establishing a sustained human presence on the Moon and using those lessons to support future missions to Mars.