Former SpaceX engineer, Halen Mattison, and his startup, General Galactic, are looking to revolutionize rocket propulsion by turning water into rocket fuel. Their ambitious project, discussed in ...

The idea of using in-situ resources, such as water, on the surface of distant worlds to synthesize rocket fuel has been around for many decades. For many years, for instance, scientists have suggested ...

For more than 60 years, nearly every large rocket used some combination of the same liquid and solid propellants. Refined ...