Water on Mars any point in the year but would be ideal for solid carbon dioxide. The carbon dioxide melting in the warmer summer would yield liquid carbon dioxide which would then form the gullies. Even if gullies are carved by flowing water at the surface, the exact source of the water and the mechanisms behind its motion are not understood. The dry gullies are deep grooves etched into the slopes that are there year-round. There are many other features on Mars, and some of them change seasonally. In August 2011, NASA announced the discovery by undergraduate student Lujendra Ojha of current seasonal
Mars Exploration Program Mars' surface containing superoxides and lacking a magnetosphere and an ozone layer to protect from radiation from the Sun, scientists would have to thoroughly understand as much of Mars' dynamics as possible before any action can be taken toward the goal of putting humans on Mars. Mars exploration missions have historically had some of the highest failure rates for NASA missions, which can be attributed to the immense engineering challenges of these missions as well as some bad luck. With many of the goals of the MEP involving entry, descent, and landing of spacecraft (EDL) on the surface of Mars,