Nasa has announced a plan to use a huge magnet to change the atmosphere on Mars to make it more suitable for humans to live there.
The director of Nasa's planetary science division, James Green, said that scientists would like to use an artificial magnetosphere, which should help protect Mars from harmful radiation from the sun, Newsweek reported.
Around three billion years ago it was the radiation from the sun that caused Mars to lose its atmosphere, which is why it is now like a desert.
The method would involve using inflatable structures placed in orbit around the planet, which should create a magnetic dipole - a pair of poles which keeps the magnetic moment constant within it.
Eventually this would restore the atmosphere, warming up the planet and creating a protective layer.
Green said: "The solar system is ours, let’s take it. That, of course, includes Mars and for humans to be able to explore Mars…we need a better environment.
“This is not terraforming as you may think of it, where we actually artificially change the climate, but we let nature do it and we do that based on the physics that we know today.”