The UK Space Agency (UKSA), in collaboration with the Canadian Space Agency (CSA) and Nesta’s Challenge Works, has launched the Aqualunar Challenge - a £1.2m challenge prize to reward the development of new technologies that can purify water ice found in the Moon’s soil. As part of their contribution to the Artemis Missions, the UKSA and CSA hope these technologies will go on to support a permanent crewed lunar base, providing a source of water for drinking and growing food, as well as a source of oxygen for air and hydrogen for fuel.