Space startup General Galactic aims to fly a satellite using only water for in-orbit propellant. The 1,100-pound satellite could validate two separate methods for water propulsion when it flies to ...

A former SpaceX engineer says he has solved the long-standing engineering problems that have kept water-based rocket propulsion from scaling beyond small satellites. The claim arrives against a ...

There’s been this hand-wave, this assumption, this yada yada at the core of our long-term space programs. If we can return astronauts to the moon, we’ll find ice there. And if we find that ice in ...

Humanity’s plans for deep-space exploration hinge on the ability to use basic resources, such as water, to propel rockets to farther destinations in the solar system. Despite decades of ...

If SpaceX is going to fly Starships as often as it wants to, it’s going to take more than rockets and launch pads. First, there’s the sprawling factory that SpaceX has constructed at its Starbase ...