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

NASA and General Atomics tested the fuel by exposing it to temperatures up to 3,000 Kelvin (4,940 Fahrenheit or 2,727 Celsius ...

While this latest test doesn’t make nuclear-powered rocket engines viable just yet, it’s an important step on the journey.

STORY: It’s supposed to take American astronauts back to the Moon. But NASA’s giant new rocket has been dogged by delays and ...

First conceived of in 1945, this is a rocket that replaces burning chemical fuel with a nuclear reactor that is used to heat up a propellant. This propellant is most likely hydrogen, though ...

It's not exactly the Fuel Rod Cannon first introduced as a usable weapon in Halo 2, but rather a UNSC SPNKr rocket launcher ...

Astronauts on China's Tiangong space station successfully produce oxygen and rocket fuel using artificial photosynthesis, ...

The innovative technique has the power to change space exploration methods and simultaneously ... How SpaceX intends to convert atmospheric CO2 into rocket fuel represents its unusual fuel initiative.

Scientists are developing a new space propulsion system that uses water as fuel, promising a more sustainable way to explore ...

The Shenzhou-19 crew’s experiment marks the first in-orbit application of this method, supporting China’s goal of a crewed ...

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 ...