Expedition 71 Flight Engineers Don Pettit and Alexey Ovchinin

iss071e650313 (Sept. 14, 2024) --- Expedition 71 Flight Engineer (from left) Don Pettit from NASA demonstrates filling a specially-made coffee cup from a drink bag to Expedition 71 Flight Engineer Alexey Ovchinin from Roscosmos. The coffee stays inside the cup due to surface tension, a property that enables liquids to resist an external force, such as microgravity, and adhere, or stick to a surface.