Astronauts Jessica Meir and Chris Williams work together inside the Columbus laboratory module

iss074e0503707 (April 22, 2026) --- NASA astronauts Jessica Meir and Chris Williams (in the background) work on separate tasks inside the International Space Station’s Columbus laboratory module. Meir swapped scientific hardware inside the BioLab research incubator to study how DNA damaged by space radiation repairs itself. Williams installed new laptop software and checked computer connections to the station’s Wi‑Fi system.