Back to overview

Can I use a laser to travel in space ?

Lasers have become an essential technology in space, with applications ranging from defensive systems like intercepting  missiles to ignition for fuel and even propelling spacecraft using light sails. By placing a laser in space and directing it toward a surface or light sail on a spacecraft, we can create a propulsion force through photon pressure. In the vacuum of space, where there’s no atmospheric drag or resistance, this photon pressure can steadily push the spacecraft forward, creating a fuel-free propulsion system.

The concept of laser-propelled space travel is both efficient and sustainable. As long as the laser beam maintains its focus on the sail, the spacecraft will continue to accelerate. This form of propulsion has the potential to revolutionize space exploration, enabling long-duration missions and travel to distant regions of the solar system and beyond without relying on traditional fuel sources.

The basic laser has to be powered with electricity from solar panels mounted on the space station. Some additional conventional control steering/braking rockets should be needed onboard the space-sail-ship to correct your course heading and to decelerate at the arrival orbital- mars-space station. Also the base laser station has to balance the reaction forces of the photon stream with conventional rockets.