Photonic propulsion

Photonic propulsion is a method of moving spacecraft using light, typically from lasers or the Sun. Instead of traditional fuel, it relies on the momentum of photons—particles of light—that exert a tiny push when they strike a surface. By directing a powerful laser at a lightweight spacecraft equipped with a reflective sail, the light's energy transfers momentum, gradually accelerating the craft to high speeds. This technology offers the potential for rapid, fuel-free travel across vast distances, making it a promising approach for deep space exploration in the future.