The aviation industry plays a vital role in the global transportation network, enabling efficient global connectivity and contributing to economic growth. However, air traffic accounts for approximately 3.5% of climate warming caused by human activity. As the number of flights is expected to rise in the coming decades, and given that aviation is among the hardest sectors to decarbonize, this share is likely to increase. In response, the industry is exploring technologies to significantly reduce its climate impact. Liquid hydrogen-powered aircraft represent a promising solution, offering the potential for zero carbon emissions and significant reductions in other pollutants. However, these aircraft involve major technological challenges and require extensive research.