NASA astronauts Jack Hathaway and Jessica Meir pose together for a portrait during research activities

iss074e0604611 (May 22, 2026) --- NASA astronauts Jack Hathaway and Jessica Meir, both Expedition 74 flight engineers, pose together as Hathaway shows off a pair of Advanced Space Experiment Sample Processor-4 research cassettes being used aboard the International Space Station to study how weightlessness affects drug crystals possibly leading to new pharmaceutical formulas.