Matthias Maurer finds one of the projects investigating the Moon particularly fascinating: ‘baked’ bricks made of Moon dust. Why should we take construction materials for habitats on future missions to Earth's satellite, if they are abundantly available and free of charge at the destination – including the energy source. The 'only' equipment requiring transport would be a solar furnace to bake these moon bricks from regolith. Material physicists and solar researchers at DLR are investigating how it would be possible to produce 'moon bricks' on the ground. Initially they crumbled, but now they are stable: baking moon bricks is a work in progress.