Beginning of Essay
The net is an interesting and mysterious planet. It is often referred to as the “Red Planet.” The rocks, soil, and sky all have a red hue on account of rust. is the fourth planet from the sun at about 141 million miles (228 million kilometers) and the last ....

Middle of Essay
.... and Neon at 0.00025 %. Martian air contains only about 1/1,000 as much water as our air, but even this small amount can condense out, forming clouds that rise high in the atmosphere or swirl around the slopes of towering volcanoes. Local patches of early morning fog can form in valleys. At the Viking Lander 2 site, a thin layer of water frost covered the ground each winter. There is evidence that in the past a denser Martian atmosphere may have allowed water to flow on the planet. Physical features closely resembling shorelines, gorges, riverbeds and islands suggest that great rivers once marked the planet. is smaller and, because of its greater ....