View Larger Image Artemis II WDR Update: ICPS LOX Chilldown Underway; Core Stage LH2 Troubleshooting Continues By Overlook Horizon|2026-02-02T14:11:00-05:00February 2nd, 2026|Categories: NASA News|Tags: Artemis, nasa, outer space, space, spaceflight| Teams have started chilling down the lines used to feed liquid oxygen into the upper stage. Troubleshooting of liquid hydrogen loading into the core stage continues.