Title : Strongest signal yet that there is water on Mars as scientists find 'streams' spilling over crater rims
link : Strongest signal yet that there is water on Mars as scientists find 'streams' spilling over crater rims
Strongest signal yet that there is water on Mars as scientists find 'streams' spilling over crater rims
fingerlike features visible in images of Mars may be streams of salt water that spills over the edges of the craters, scientists believe.The puzzling clusters of dark lines fade in winter and reappear in the spring.
Images taken by the US space agency's Mars Reconnaissance Orbiter spacecraft showed the markings on several steep slopes south of the Martian Ecuador.
Water signs? Similar to visible fingers features images of Mars may be streams of salty water spilling over the edges of the craters, scientists believe The features could be the first definitive evidence current liquid water on the red planet, experts say.
If this proves to be the case, sites can provide a promising hunting ground for signs of life on Mars.
The researchers describe the discovery in a study published today in the journal Science.
"The best explanation we have for these observations so far is flow of briny water, although this study does not prove that," co-author Dr. said Alfred McEwen of the University of Arizona.
Water may not necessarily be flowing on the ground, according to scientists. Some evidence suggests that it could be buried, but affects the surface to look dark.
Salinity decreases the temperature at which water freezes. This means that liquid water could exist seasonal salt in mid-latitude regions of Mars, despite the coldness of the "hot" season planet.
In detail: The Science Experiment camera High Resolution Imaging in portions MRO NASA show surface Mars in unprecedented detail 
life on Mars? If this proves to be the signs of water, sites can provide a field promising hunt for signs of life on Mars The lines are between about half a meter to five meters wide, but they extend for hundreds of meters.
Some scientists sites identified more than 1,000 individual flows, low steep slopes, such as the edges of impact craters.
University of Arizona student Lujendra Ojha, who was the first to detect the features after identifying subtle seasonal changes in the images of the orbiter, said, 'I was puzzled when I first once these features ... we soon realized that we were different from slope streaks that had been observed before.
The lines appear to lengthen and darken on rocky slopes facing Ecuador from late spring to early autumn.
therefore seem to favor warm areas and times, suggesting that consist of volatile material.
However, the sites are too hot for frozen carbon dioxide, and in some regions too cold for not salty pure water.
When scientists imaging spectrometer ship on marked tracks flow, which has a surprise focused - the instrument which remotely analyzes the chemical composition of materials, not they were able to confirm the presence of water
.
Dr. McEwen said this could be because the water quickly dries on the surface and there happened to be there when he carried out the Analysis.
Alternatively there may be shallow underground.
An underground flow of brackish water could rearrange sand grains or alter surface roughness in a way that obscures their appearance.
"It's a mystery now, but I think it's a solvable mystery with further observations and experiments, Dr. McEwen said.
Mars has not yet definitive evidence of liquid water on its surface active today.
-Fresh look "ravines" have suggested activity in recent geological times could involve water, and ground water ice has been detected near the surface of the planet in some regions.
Possible droplets of brine have also appeared on the struts of the probe Phoenix Mars Lander, which landed near the north pole of Mars in 2008.
source: NASA
"Strongest signal yet that there is water on Mars as scientists find 'streams' spilling over crater rims", article source: riseearth.com
Thanks for Reading Strongest signal yet that there is water on Mars as scientists find 'streams' spilling over crater rims
Thank you for reading this Strongest signal yet that there is water on Mars as scientists find 'streams' spilling over crater rims, hopefully can give benefits to all of you. well, see you in posting other articles.
You are now reading the article Strongest signal yet that there is water on Mars as scientists find 'streams' spilling over crater rims Url Address https://healthnbeautyarticles.blogspot.com/2016/07/strongest-signal-yet-that-there-is.html
0 Response to "Strongest signal yet that there is water on Mars as scientists find 'streams' spilling over crater rims"
Post a Comment