Thanks to its carved topography, researchers have always suspected that Mars was once home to several rivers, lakes, and perhaps even oceans. There has even been some speculation about the existence of frozen water deep beneath the ground. However, finding evidence of liquid water in the present day, has been a little elusive. That is why NASA's September 28th announcement that confirmed the detection of liquid brine on the Red Planet caused so much excitement.
The first indication of the liquid's presence came in 2011 from high-resolution images captured by the Mars Reconnaissance Orbiter (MRO), which has been orbiting the Red Planet since 2006. They showed dark streaks that appeared to be flowing down the inner walls of the Newton crater
The first indication of the liquid's presence came in 2011 from high-resolution images captured by the Mars Reconnaissance Orbiter (MRO), which has been orbiting the Red Planet since 2006. They showed dark streaks that appeared to be flowing down the inner walls of the Newton crater