Astronaut Matthew Dominick works on the Space Linear Acceleration Mass Measurement Device

iss071e113128 (May 22, 2024) --- Expedition 71 Flight Engineer and NASA astronaut Matthew Dominick works in the International Space Station's Columbus laboratory module performing maintenance on the Space Linear Acceleration Mass Measurement Device, or SLAMMD. The human research device applies a known force to a crew member then calculates body mass using a form of Newton’s Second Law of Motion, force equals mass times acceleration.