Rolls-Royce and the British space agency team up to develop a nuclear-powered spacecraft engine that could take us to Mars in just three months
- Companies will explore the potential of nuclear energy as an energy source
- A nuclear-powered spacecraft engine could halve its travel time to Mars
- It could also reduce the radiation dose taken by astronauts
The British aircraft engine manufacturer Rolls-Royce has formed an unlikely alliance with the UK Space Agency to develop nuclear-powered spacecraft engines.
The collaboration will make the two organizations work together to explore the potential of nuclear energy as an energy source for future expeditions into deep space.
If successful, a nuclear spacecraft could reduce the duration of the trip to Mars to just three to four months – about half the time possible using current chemical engines.
Moreover, the short travel time would mean that astronauts aboard the spacecraft are exposed to less radiation during flight, which makes future trips to Mars or other planets safer.

If successful, a nuclear-powered spacecraft engine could reduce the duration of the trip to Mars to just three to four months – about half the time it would use using current systems.
Nuclear propulsion has previously been described by NASA as a “game-changing technology for deep space exploration.”
This involves channeling the release of energy into the splitting of the atom to accelerate the propellers to a huge speed.
Rolls-Royce and the UK Space Agency predict that this type of engine could be twice as efficient as the chemical engines currently used to power missiles, halving travel times.
Dr Graham Turnock, executive director of the UK Space Agency, said: “Space nuclear energy and propulsion is a game-changing concept that could unlock future deep space missions that will take us to Mars and beyond.
“This study will help us understand the exciting potential of atomic-powered spacecraft and whether this nascent technology could help us travel farther and faster through space than ever before.”
A nuclear-powered engine could also make deep space travel safer for astronauts.
With travel time reduced by half, astronauts would be exposed to a lower dose of radiation, which could protect them from both radiation sickness and cancer.

Rolls-Royce and the UK Space Agency predict that this type of engine could be twice as efficient as the chemical engines currently used to power rockets, halving travel time.
“Space radiation can put astronauts at a significant risk of radiation sickness and an increased risk of cancer, central nervous system effects and degenerative diseases for life,” NASA explained.
Dave Gordon, Senior Vice President of UK, Rolls-Royce Defense, said: “We are excited to work with the UK Space Agency on this pioneering project to define future nuclear energy technologies for space.
“We believe there is a real niche capacity in this area and this initiative can build on the strong nuclear network and supply chain in the UK.
“We look forward to developing this and other interesting space projects in the future as we continue to develop the power to protect our planet, secure our world, and explore our universe.”
The idea of a nuclear-powered spacecraft engine is not new.
NASA launched a program in 1961 to develop a nuclear-powered engine, although the program was completed in 1972 due to space budget cuts.
Now, more than 45 years later, NASA is once again working on a nuclear thermal propulsion (NTP) system.
“We are working on a first-generation NTP system that has great growth potential,” said Doyce “Sonny” Mitchell, NTP project manager at NASA’s Marshall Space Flight Center in Huntsville.
NASA’s timeline for the project remains unclear.