British startup Pulsar Fusion has unveiled Sunbird, a space rocket concept designed to meet spacecraft in orbit, attach to them, and carry them to their destination at breakneck speed using nuclear ...

Theoretically, Sunbird's tremendous speeds could cut mission times to Mars in half, from seven to eight months to about four.

could significantly cut down the time it takes to travel to Mars in half. As CNN reports, the UK Space Agency-funded company's Sunbird rocket harnesses the power of nuclear fusion, the same process ...

The higher the specific impulse of a rocket thruster, the more thrust it generates per mass of fuel. Impulse is the integral of force over time, measured in Newton-seconds. Specific impulse ...

A secretive UK-based startup has just pulled back the curtain on a futuristic space propulsion project ... Revealed publicly for the first time in March 2025, the rocket’s design is bold ...

A British company says they developed a secret nuclear rocket that could cut in half ... but two of the largest space propulsion testing chambers in the UK, if not all of Europe.