A team of researchers have said that MARS may also have visible aurorae, which is natural light display in the sky just like neighbouring Earth.

The new study showed that the upper atmosphere of Mars glows blue due to the activity of the Sun. The study was tested through numerical simulation and a laboratory experiment called the Planeterrella. Planeterrella is used tosimulate the aurora and is developed by the Grenoble Institute of Planetology and Astrophysics, France and American space agency, NASA.

Researcher Cyril Simon Wedlund said that the study indicates that the strongest colour in the Martian aurorae is expected to be blue. They said that an astronaut walking on the Martian soil can see phenomena with naked eye when he looks towards the sky.

Experts said that aurorae occur when electrically charged particles of solar origin are sent down along the magnetic field lines on a planet and where they enter the planetary atmosphere and excite its atoms and molecules. Studies showed that the aurorae also occur in the visible range on Mars. On Earth, its normally essentially green or red from atomic oxygen or blue-purple from ionized molecular nitrogen.