Eco-friendly alternatives to fossil fuels are venturing beyond Earth—and into space.

Can water really power a rocket? Scientists are exploring ways to use water as fuel, from splitting it into hydrogen and oxygen to steam propulsion. It might just be the key to the future of space ...

The new approach called the Water-based Electric Thrusters (WET) aims to develop a method of converting water into plasma, a ...

[The Q] is one such experimenter, who built a dual-thrust water rocket that even has a parachute for landing! The testing took place in an area strangely reminiscent of a certain operating system.

Lunar Trailblazer is part of a growing list of probes and landers heading toward the moon to search for water ice.

Space is the only place where rocket fuel could be more precious than water. The China Manned Space Agency announced last month that taikonauts on the ongoing Shenzhou-19 mission successfully ...