Fluidr / Astronaut Don Pettit swapping samples of materials to observe how they burn in weightlessness by NASA Johnson

iss072e451296 (Jan. 8, 2025) --- NASA astronaut and Expedition 72 Flight Engineer Don Pettit works in the Destiny laboratory module's Combustion Integrated Rack swapping samples of materials to observe how they burn in weightlessness. The investigation taking place inside the International Space Station's CIR enables the safe observation of flames and how they spread in microgravity potentially improving fire safety on crew missions.

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