By looking at high-resolution images captured by the Mars Reconnaissance Orbiter, scientists are able to see gullies, which are argued to be geologically recent. Because they are most likely formed by water, it is believed that they can answer the question of whether or not there is still "active" water on Mars. As a summer Wesleyan McNair scholar, astronomy major Lavontria Aaron '14 used a hyperspectral instrument to determine if the gullies contained minerals (salts) which would be left behind by water brines. "By examining the spectrum of the brines, we'll be able to learn more about Mars' history and…