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 ...

In theory, water-based propulsion systems are a low-cost, safer alternative to conventional engines. Water is easier to ...

A new type of rocket engine, one that could power a plane from Los Angeles to Tokyo in just two hours, has eluded scientists for decades. Houston's Venus Aerospace says it recently solved the puzzle.

When most people think of rockets, they likely imagine something like SpaceX's Raptor engine, or they might recall the Apollo 11 Saturn V rocket that took astronauts to the Moon. Rockets aren't ...

In response to a query from Ars about the engine test anomalies, Rocket Lab Chief Executive Officer Pete Beck downplayed concerns.

The only people who value ease of maintenance at a cheap cost to manufacture, more than NASA, are people cruising Craigslist and eBay for a low-mileage 350 small-block Chevy motor at three in the ...