The Space Volcanic Algae project from POLSA/ESA investigates the potential of red microalgae for use during for long-duration space exploration missions. These algae are hardy and thrive in extreme environments, and could be used for oxygen production, waste management, and toxic compound decomposition in space. The study will analyse the genes that control oxygen production and metabolism in space-grown algae, comparing them with ground controls. Data from these experiments will enhance our understanding of extremophiles - organisms that thrive in extreme environmental conditions - and identify adaptations essential for oxygen production and other biochemical processes. The insights could also lead to improved industrial applications on Earth.