This morning's launch was rescheduled. Via Bloomberg:
The closely watched mission to send a rocket around the moon is at risk of delays as NASA grapples with multiple issues that have arisen in the hours before the launch.
The space agency is investigating a potential crack in material in the main body of the rocket as well as a possible temperature issue with one of the main engines, officials said early Monday. Those came after engineers examined and resolved a suspected leak affecting the hydrogen tanking process.
The problems raise the likelihood that the Artemis I launch from the Kennedy Space Center won’t take place at the scheduled time of 8:33 a.m. local time in Florida. If the rocket doesn’t lift off by 10:33 a.m., it could be rescheduled for next week or potentially October.
The Artemis program was formally established in 2017 during the Trump administration; however, many of its components such as the Orion spacecraft were developed during the previous Constellation program (2005–2010) and after its cancellation, according to Wikipedia.