After a detailed analysis of the data of the Odyssey probe, which has been monitoring the Red Planet for the longest time, a possible presence of water on the planet was detected in an improbable zone below the surface on the planet’s equator.
The new analysis of the probe readings revealed that there are substantial amounts of water in the area in an icy state, but according to all we know about the climate of Mars, this should be impossible. The discovery was made by a team from Johns Hopkins University, led by Jack Wilson, and results from the analysis of the probe neutron spectrometer tool, whose function is to detect the presence of hydrogen on the surface of the planet.
Although the main function of the Odyssey probe is the detection of the presence of water on the planet, since it is at an altitude of approximately 3800 km, a direct measurement becomes impossible, and due to this, the probe uses an analysis of the Hydrogen levels, which are a good indicator that water can be found, and although the probe does not have the ability to directly detect the presence of water, neutron analysis can detect its presence.
This technique was the same one the probe used to detect ice water on the planet back in 2002, but at the time it was only detected in the polar zones of Mars, but all this changed when the scientists decided to use the method of reconstruction of the image Bayesian to increase previous neutron detections, and then discovered the presence of relevant water reservoirs, which were unknown, even on the equator.
As for the explanation for the apparent presence of these reservoirs in this line, scientists think it is due to an earlier axial position of the planet, which would be about 20 ° less inclined in the past and a few million years ago, and that such inclination, provided in the conditions for the existence of water in the frozen form in the regions now detected.
Of course, a better and more thorough investigation will be needed in order to reach a more definitive conclusion.