It's official, NASA's Mars Curiosity rover has just analyzed its first sample of Martian soil from the red planet's surface and discovered that about two percent of it is made up of water. You read that right, there really is water on Mars. Continue reading for more information.
The rover is equipped with its very own scientific lab, which was used to scoop up the sample of Martian soil and then immediately analyzed with the on-board equipment, which includes several spectrometers. In other words, it allowed the rover to heat up the sample and break it down to find its chemical components and figure out the ratios of just how much water is present. Mars' surface layer is a mixture of soil created by its dust storms and that means water is readily available anywhere on the planet.
[Sources 1 | 2]