Honda is collaborating with space tech companies Sierra Space and Tec-Masters to test its high-differential pressure water electrolysis system on the International Space Station as part of its vision to support life on the Moon and beyond using regenerative fuel cell technology. The system aims to continuously produce hydrogen, oxygen, and electricity. Despite the historical challenges faced by hydrogen-powered cars, Honda remains optimistic about hydrogen's role in decarbonizing its vehicle fleet by 2040. By leveraging the most abundant element in the universe, Honda intends to power its space exploration initiatives with hydrogen. The process involves solar panels capturing sunlight during the lunar day to generate electricity for water electrolysis. The byproducts, hydrogen, and oxygen, will be used for various purposes, creating a closed-loop energy cycle. Honda plans to stress test the system on the ISS to understand its functionality in a microgravity environment and collaborate with NASA for transportation. Establishing a reliable source of oxygen and electricity in space could pave the way for sustainable habitats beyond Earth. While challenges exist due to the effects of low gravity on electrolysis, Honda's innovative approach signifies a bold step towards utilizing hydrogen for space exploration.