The intensive exploration of Mars is yielding a large amount of data about its properties and its past. However, two great enigmas are yet to be explained: what caused this planet to be different from planet Earth? Is there or has there been any biological activity on the Red Planet? Particularly revealing is the comparative study of both planets.
From a distance, the Earth and Mars show some striking differences. In the first case, the prevailing colors are white and blue, corresponding to clouds and the oceans, and the brown shades of the continents. Thus, the existence of water in its... read more ❯