Russian engineers are betting that a radically different rocket engine can compress the long slog to Mars into something closer to an interplanetary commute. Their new plasma propulsion prototype, ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. Shown here is a one-eighth scale ...

Seoul, South Korea (CNN) — Kim Jong Un on Monday watched a test of North Korea’s new high-thrust rocket engine, an event that sets the stage for Pyongyang to test its newest intercontinental ballistic ...

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 ...

North Korea's test of a rocket engine Sunday showed "meaningful" signs of progress, according to South Korean officials. "Through this test, it is assessed that (North Korea) has made meaningful ...

Introduction -- Rocket engine fundamentals -- Nuclear rocket engine cycles -- Interplanetary mission analysis -- Basic nuclear structure and processes -- Neutron flux energy distribution -- Neutron ...