Watch how the Space Launch System rocket RS-25 undergoes a core stage engine test-fire. Credit: NASA's Stennis Space Center ...

A Houston-based company is attempting to break past Mach 5 — and it's broadening its scope beyond just commercial flights, ...

General Atomics Electromagnetic Systems (GA-EMS) has successfully tested the nuclear fuel that may one day propel and power the spacecraft of the future. The trials verify that the fuel can survive ...

General Atomic's new nuclear fuel was subjected to the maximum heat of a reactor for 20 minutes in the latest tests.

“The final test achieved a fantastic 6,000 Newtons of thrust, breaking the previous record set by the University of Sheffield ...

German launch startup Rocket Factory Augsburg has taken a step towards a first launch by gaining a first-ever license to ...

Angry Astronaut and Nextbigfuture commenter are making the case that SpaceX and Elon Musk must switch to nuclear thermal rockets to colonize Mars. I will ...

The Indian Space Research Organisation (ISRO) has successfully demonstrated the restart capability of its liquid-fueled ...

Stoke Space just landed $260 million to disrupt the reusable rocket industry. The Kent, Washington-based rocket launch ...

One just launched the world’s biggest rocket, with mixed success. The other makes small model rockets for hobbyists, and it's ...

Isro successfully demonstrated the restart capability of its Vikas liquid engine, crucial for future reusable rocket stages, ...

A SpaceX test flight has ended in failure after an upgraded Starship rocket exploded over the Atlantic. SpaceX, Elon Musk’s ...