It seems like an obvious thing to say. When looking to establish a human colony on Mars, water is key. So logically, one should follow the water when deciding where the first human interplanetary landings should occur.
But water isn’t an obvious thing on Mars. There are no oceans or rivers or lakes like there are on Earth. But new research garnered from NASA’s Mars Reconnaissance Orbiter and Mars Odyssey missions reveal an array of water ice deposits that could greatly aid future human exploration endeavors.