The European Commission's ambitious targets include a 60% reduction in CO₂ emissions from aviation by 2050 and the development of a comprehensive EU Space Law. Fraunhofer ILT in Aachen is supporting aerospace companies by implementing new additive manufacturing processes that reduce the ecological footprint and production costs. By focusing on lightweight construction, 3D printing, and high-performance materials, Fraunhofer ILT is paving the way for greener aviation solutions. Through the TIRIKA research initiative, experts are developing special powders and LPBF processes tailored for hydrogen engines, ensuring high component density and resistance to hydrogen embrittlement. The institute's focus on life cycle assessment helps evaluate the environmental impact of additive manufacturing, highlighting its sustainability benefits. The EU project ENLIGHTEN further pushes the boundaries by aiming to create cost-effective and environmentally friendly rocket engines powered by bio-methane and green hydrogen. Fraunhofer ILT's Additive Manufacturing and Repair LMD group is also contributing to space exploration by developing more efficient and precise manufacturing processes for rocket components using laser material deposition.