NASA scrubbed it's final testing of the Artemis 1 space launch system rocket Sunday due to safety concerns.

Teams had some technical difficulties during the tanking stage that would pose to their technicians a risk of exposure to hazardous gases.

To move forward, their teams are meeting to figure out how to safely proceed and the final part of this pre-launch test could resume as early as Monday.

The Artemis program is an initiative that NASA is taking with both commercial and international partners to send astronauts back to the moon and, eventually, to Mars.

The first part of the mission includes sending into space an uncrewed flight aboard this rocket, which has been in it's "wet dress" rehearsal since Friday and is a step needed to be taken in order to officially launch later this year.

MORE ON ARTEMIS 1:
Official Release of the Scrubbing: Artemis I Wet Dress Rehearsal Scrub – Artemis (nasa.gov)
More Information on the "Wet Dress Rehearsal:" NASA Readies Rocket for Artemis I Wet Dress Rehearsal | NASA 
More on the Artemis 1 Rocketry: Around the Moon with NASA’s First Launch of SLS with Orion | NASA
Map for the Flight Test This Rocket Will Go On Later This Year: Artemis I Map | NASA