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 ...

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

Moments after liftoff from Florida’s Space Coast early Thursday morning, a shower of sparks emerged in the exhaust plume of United Launch Alliance’s Vulcan rocket. Seconds later, the rocket twisted on ...

A Colorado-based company is set to advance its Draper engine for space-based defense. Ursa Major’s revolutionary new engine is designed for hypersonic defense, in-space propulsion. The company has ...

The Vulcan has launched on its second-ever national security spaceflight in what will be the biggest test yet for ULA's ...

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

Colorado-based engine maker Ursa Major has secured an order for its developmental Draper rocket powerplant. The propulsion start-up on 17 September said it had received a $35 million contract from an ...

For Florida rocket launches, there's typically a rumble that follows after liftoff. Sometimes windows shake in areas closest to NASA or Cape Canaveral ...