fusion propulsion

No starship is waiting on a launchpad, but researchers are actively developing the building blocks for interstellar travel. Work under way includes laser-driven light sails, fast precursor probes, fusion propulsion concepts, and missions that would use the sun's gravitational lens as a telescope. Engineers are also designing long-duration spacecraft able to survive decades in flight, laying groundwork for a first voyage to another star.

British company Pulsar Fusion is developing Sunbird, a nuclear-powered spacecraft designed to drastically shorten journeys to Mars. The concept uses nuclear fusion propulsion to roughly cut current travel times in half, potentially reducing a round trip to the Red Planet and improving mission safety for future crews. The project highlights growing private-sector interest in advanced propulsion for deep space exploration.