art002e027814 (April 8, 2026) – NASA astronaut Reid Wiseman collects a saliva sample aboard the Orion spacecraft for the Artemis II Immune Biomarkers study. The study looks at proteins, enzymes, and other biomarkers found in the samples to help researchers pinpoint how the body responds to mission stressors during deep space missions. These biomarkers give insight into crews’ immune health, inflammation, nutritional status, bone health, and more. Credit: NASA
Date April 8, 2026