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 a geological process at the bottom of an ancient drying lakebed, and are related to mineral veins in the area similar to gypsum crystals. On June 7, 2018, NASA announced that the "Curiosity" rover had discovered organic compounds in sedimentary rocks dating to three billion years old, indicating that some of the building blocks for life were present. In July 2018, scientists reported the discovery of a subglacial lake on Mars, the first known stable body of water on the planet. It sits below the surface at the base of the southern polar ice cap and is about wide. The