When the Pentagon asked Ursa Major in 2021 if it would be interested in developing solid-fuel rocket motors for missiles, founder and CEO Joe Laurienti didn’t feel in any rush. The Colorado-based ...

Kawasaki Heavy Industries has started taking commercial orders for what it says is the world’s first gas engine designed to operate on a hydrogen and natural gas blend, a development that signals ...

In the near century since Robert Goddard, the founder of modern rocketry, fired the first liquid-fuel rocket into the sky, rocket scientists worldwide have favored liquid-fuel engines to power ...