Universal Hydrogen, a California-based start-up founded in 2020, recently shut down due to funding depletion despite notable accomplishments in hydrogen-powered aviation. Backed by investors like Fortescue and major industry players, the company struggled to secure additional funds in a challenging venture capital market. The founder, Paul Eremenko, and key investor Peter Barrett highlighted the difficulties faced in raising capital, attributing the challenges to market conditions rather than technological shortcomings. Universal Hydrogen faced technical obstacles related to hydrogen storage and infrastructure needs for hydrogen-powered aircraft. Despite successful test flights, the company encountered limitations in energy storage compared to traditional jet fuel. Fortescue's ongoing commitment to green energy projects, including hydrogen initiatives, demonstrates continued industry support for sustainable aviation solutions. While Universal Hydrogen's closure is a setback, the company's efforts have contributed to the advancement of zero-emissions aviation. By signing agreements with Fortescue and exploring global hydrogen supply for aviation, the start-up aimed to revolutionize the industry until 2035. The lessons learned from Universal Hydrogen's journey will be crucial for future ventures in green aviation as the industry strives for environmentally friendly solutions.