An idea to create a magnetic field on Mars using superconducting magnets circling the whole planet was described in the paper.
According to Dr. Jim Green, Director of NASA's Planetary Science Division, "In the future it is quite possible that an inflatable structure (s) can generate a magnetic dipole field at a level of perhaps 1 or 2 Tesla (or 10,000 to 20,000 Gauss) as an active shield against the solar wind". He proposed a plan to shield Mars from the Sun's rays through an artificial magnetic field around the planet just like Earth.
A Nasa scientist believes that by putting a man-made magnetic shield around Mars, the conditions on the Red Planet will not be as harsh and will make it easier for humans to settle there. The magnetic field that Mars once had "would have played an important role in maintaining water and atmospheric gases on the planet", and also would have "protected the planet from strong radiations and solar winds".
Scientists working at the USA space agency think that launching a sufficiently powerful magnetic shield into space could serve as a replacement for the Red Planet's own lost magnetosphere, the natural shield that prevents charged particles from reaching the surface of a planet. Even if there is still some hearty microorganism living on the Red Planet, it's not suitable for human habitation without a great deal of protective equipment. "The thin atmosphere both prevents liquid water from residing permanently on its surface and makes it hard to land missions since it is not thick enough to completely facilitate a soft landing", the presentation explained.
Increasing the average surface temperatures on Mars by about four degrees Celsius will release the frozen carbon dioxide in the polar regions. With the human colonisation idea getting a push, NASA is devising ways to make the planet a habitable one for the human species to thrive there. There are planned missions to the Moon, and the first pioneers from Earth will voyage to Mars. And if this happens, it would certainly help pave the way for Mars colonization within the space of few decades. About one seventh of the ancient Martian oceans are trapped in the northern ice cap, and the liquid water will flood the surface, returning Mars to the Earth like environment it once was. If we want to colonize the planet, we need to bring that Mars back. Mars's atmosphere has been damaged by solar particles that ripped away 90 percent of the layer, which had given the planet temperate climate and surface water about 3.5 billion years ago. Objects at the L1 point are in the same relative position to the Mars and the Sun, so the magnetic dipole will always be between the Sun and Mars.
Researchers noted that although the plan is hypothetical at this point, a small scale magnetosphere that operates on a similar premise does exist and could serve as the model for an huge shield.