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 Excursion Module Mars Excursion Module The Mars Excursion Module (MEM) was a spacecraft proposed by NASA in the 1960s for use in a manned mission to Mars, and this can refer to any number of studies by corporations and spaceflight centers for Mars landers. However, primarily a MEM referred to a combination a Manned Mars lander, short-stay surface habitat, and Mars ascent stage. Variations on a MEM included spacecraft designs like an unmanned Mars surface cargo delivery, and there was a MEM lander that combined a communications center, living habitat, and laboratory. A MEM formed part of Mars orbit rendezvous (MOR) and