Use cases for smart materials in space exploration keep cropping up everywhere. They are used in everything from antenna deployments on satellites to rover deformation and reformation. One of the latest ideas is to use them to transform the solar sails that could primarily be used as a propulsion system for a mission into a heat shield when that mission reaches its final destination. A new paper from Joseph Ivarson and Davide Guzzetti, both of Auburns Department of Aerospace Engineering, and published in Acta Astronautica, describes how the idea might work and lists some potential applications exploring various parts of the solar system.