From interplanetary spaceships to reactors on the Moon, the future of space travel is quietly turning nuclear, and engineers explain why

NASA's SR-1 Freedom mission targets a 2028 launch to Mars. See how this nuclear-powered spacecraft could unlock deep space ...

An American company is inviting outside scientists to test its 5-megawatt fusion engine, and the stakes for clean power are huge

American Fusion is inviting experts to test its 5-megawatt fusion engine. Could this be the breakthrough clean power needs?