The three Roscosmos cosmonauts of Expedition 75 pose for a portrait

From left, Expedition 75 flight engineers Anna Kikina and Sergey Teteryatnikov and station commander Pyotr Dubrov, all Roscosmos cosmonauts, pose for a portrait inside the International Space Station’s Columbus laboratory module. The trio show off a portrait of the ground personnel who supported the Plasma Crystal‑4 investigation. The microgravity physics study explored complex plasmas—mixtures of ionized gas, neutral gas, and microscopic particles that become highly charged, interact strongly with one another, and may form plasma crystals. Results may influence the design of future spacecraft and lead to new research methods.