A group of NASA scientists created a stir recently at the space agency's Planetary Vision 2050 Workshop last week by suggesting a plan to create an artificial magnetic field around Mars to make it more friendly to life - most particularly, human life.
If carbon dioxide in the Red Planet's atmosphere would help to trap heat like it does on Earth, it will help melt planet's icy water and allow liquid water flow in its surface.
NASA scientists have proposed a unique strategy to regain Mars' early wetter atmosphere.
However, researchers have proposed a way to make Mars more habitable - by creating an artificial magnetic field to reduce radiation levels.
An artificial magnetosphere could be formed that would encompass the entire planet, thus shielding it from solar wind and radiation, he said. However, later, due to the collapse of the protective magnetic field with an unidentified celestial object some billions of years ago, the magnetic field eventually made the climate of Mars what it is today - frigid and arid.
Mr Green said: "This situation then eliminates numerous solar wind erosion processes that occur with the planet's ionosphere and upper atmosphere allowing the Martian atmosphere to grow in pressure and temperature over time".
"This situation then eliminates numerous solar wind erosion processes that occur with the planet's ionosphere and upper atmosphere allowing the Martian atmosphere to grow in pressure and temperature over time", Green and his team of researchers explained in an supplementary paper. "We need to be able then to also modify that direction of the magnetic field so that it always pushes the solar wind away", said Green. It would be a much smaller shield between the Sun and Mars. The initial amount of oxygen that would be released may not be enough to sustain human life but this is enough to grow plants that could boost the supply of oxygen in the planet.
"A greatly enhanced Martian atmosphere, in both pressure and temperature, that would be enough to allow significant surface liquid water would also have a number of benefits for science and human exploration in the 2040s and beyond".
"These new conditions on Mars would allow human explorers and researchers to study the planet in much greater detail and enable a truly profound understanding of the habitability of this planet", the authors write.