➀ University of Illinois researchers developed a phase-change heatsink (using paraffin wax) for satellites, enhancing thermal management in space where convection cooling is unavailable;
➁ The wax-filled heatsink absorbs peak heat through melting (170kJ/kg) and releases it via radiation, validated by CubeSat orbital tests showing gravity-independent performance;
➂ Simplified models were created for design optimization, with future studies to include solar heating effects during spacecraft orbits.