Scientists have discovered flowing salt water on Mars which has sparked conversations about potential alien life within the planetís surface. The images sent from NASAís orbiter unveiled flowing waters descending down from rocky slopes.
This image combining orbital imagery with 3-D modeling shows flows that appear in spring and summer on a slope inside Marsí Newton crater. CREDIT: NASA/JPL-Caltech/Univ. of Arizona
Information from the orbiter have fed new fuel to the discussion on Marís capability of supporting alien lifeform. Scientists have sent numerous space missions in obtaining a variety of evidence that may reveal biological microbial life outside of Earth. The latest evidence of flowing water have strengthened support and hope of discovering a live specimen.
"NASAís Mars Exploration Program keeps bringing us closer to determining whether the Red Planet could harbor life in some form...And it reaffirms Mars as an important future destination for human exploration," said NASA Administrator Charles Bolden.
Planet Mars contains many crevices, perhaps remains of dried up bodies of waters, valleys, and rivers. Scientists speculate that millions of years ago, Mars contained lakes and other large bodies of liquid, but over time the water has disappeared, perhaps flowing down beneath the planetís surface through the numerous cracks. The latest photos of flowing water presents theories that living organisms are able to survive in Marís underground flowing waters, living in darkness under the planetís surface. There are examples of such organisms on Earth, and it may also hold true on Mars.
The water shows up as dark colored finger like streaks flowing down from various slopes and crevices. Based on seasonal photos, the water patterns appear to grow or recede depending on the season. Scientists hypothesize that the briny water could appear and disappear based on the winter or summer months on the Red Planet.
"We expect water on Mars to be briny, to be salty, because we know that the surface is salty from all of the past landers and rovers...Furthermore, the salt serves to depress the freezing point of the water, so in places where itís below freezing, we see this activity, it is still plausible for that to be salty water," said Alfred McEwen of the University of Arizona.
The theory of Mars holding briny salty water is connected to its freezing point. The more salt water contains, the lower the freezing temperature. Based on McEwenís observations, the apparent unfrozen flowing waters were spotted on steeper slopes as it descends at warmer seasonal months. Water streaks on Mars are thought to be hundreds of years old.
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