The Brunswick-based startup is marketing its non‑toxic, bio‑derived fuel and a patent‑pending oxidizer system as an ...

SEOUL, South Korea — North Korea said Tuesday it had conducted the final ground test of a solid-fuel rocket engine for a long-range ballistic missile in its latest advancement toward having an arsenal ...

A Texas-based company has completed the inaugural flight test of a 3D-printed hybrid rocket engine system. The flight test, called GMLRS-class Firehawk Analog (GFA), demonstrated directional stability ...

The U.S. Space Force is putting an indefinite halt on all national security missions aboard United Launch Alliance's Vulcan Centaur, following a repeat anomaly with the rocket's side boosters.

Firing engines together proves that engines can team up to create more thrust, which is essential for lifting heavier ...

A ULA Vulcan rocket launched a Space Force mission, but an unexpected light show from its boosters sparked questions. Here's what we know.