Water-fueled rockets powered by hydrogen gas are a potential breakthrough in the aeronautics industry, serving as a green alternative to traditional fossil fuels. NASA has been researching hydrogen gas engines for rockets for decades, utilizing an electrochemical reaction to split water molecules into hydrogen and oxygen gases for propulsion. While the concept may seem futuristic, the idea of water as a rocket fuel source has been explored since the 1960s. The advantages of hydrogen gas for rocket propulsion include high exhaust velocity and the ability to use water found in space as fuel. Challenges such as corrosion protection, weight reduction, and significant investments remain to be addressed for practical implementation. Aeronautics companies like SpaceX, Blue Origin, and Boeing are increasingly interested in water-fueled rockets, with over 660 companies globally working on related technologies. NASA's focus on locating and purifying water in space is essential for the future feasibility of water-powered engines, enabling sustainable deep-space exploration without the concern of propellant depletion.