L3Harris Technologies said Jan. 5 it will sell a majority stake in its space propulsion business to private equity firm AE ...

NASA’s push for a new nuclear rocket engine is not just another upgrade to the hardware we strap to the bottom of spacecraft.

Modern spaceflight rests on a deceptively simple idea: a machine that carries its own fuel and oxidizer, then hurls exhaust backward fast enough to push itself forward. The person who first turned ...

Which US rocket companies achieved the most during 2025? Once again, Ars Technica is here to provide some answers in the form ...

Essentially, a nuclear rocket engine is a reactor that has hydrogen running through it as a propellant, which is heated to an astonishing 3,000 K (2,727 °C, 4,940 °F), giving it almost twice the ...

In the relentless quest to make journeys to Mars shorter and safer, Russian scientists have recently turned heads with a bold claim: A plasma-based propulsion system could cut the Earth–Mars transit ...

Welcome to Edition 8.21 of the Rocket Report! We’re back after the Thanksgiving holiday with more launch news. Most of the big stories over the last couple of weeks came from abroad. Russian rockets ...

The Earth is much larger than most people realize. You need to use engines if you want to efficiently navigate large sections of the planet. Everything from cars to planes relies on engines, but they ...

Zhuque-3 looks a lot like SpaceX's workhorse Falcon 9. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. China's first reusable rocket just took a ...

"We believe in a future where this is the engine powering everything..." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Pam Melroy, one of only ...

There was a time when Russia and the United States were in a highly competitive race to the moon. But the 1960s came and went, with America emerging as the pioneer of space travel. The U.S. is still ...

SpaceX testing the engines on the upper-stage Ship in preparation for the 11th flight. SpaceX SpaceX is another step closer to the 11th flight of the mighty Starship rocket after it completed a test ...