A new kind of space engine could change how we explore the solar system, and it's powered by the same force that lights up the stars. A British startup called Pulsar Fusion is working on a nuclear ...

NASA’s push for a new nuclear rocket engine is not just another upgrade to the hardware we strap to the bottom of spacecraft. It is an attempt to rewrite the basic rules of how far, how fast, and how ...

A U.K.-based space propulsion startup has unveiled an ambitious concept for a nuclear fusion rocket that may dramatically shorten the journey to Mars. In a recent video presentation, Pulsar Fusion ...

In the frozen outskirts of the solar system, a reddish dwarf planet orbits in silence. Known as Sedna, it is so distant that one trip around the Sun takes more than 11,000 years. For much of that time ...