The Mars rover MRO photographed from orbit with a high-resolution camera glaciers that were exposed by meteorites until they evaporated
Only two days ago we found out about Discovery of water on the moon. Apparently NASA likes water very much, now they publish another news related to water, this time on Mars.
The MRO spacecraft orbiting Mars photographed underground glaciers halfway between the North Pole and the Martian equator. While the Phoenix spacecraft photographed underground ice in the upper layer of the soil it excavated at its landing site near the North Pole, the new images - taken at short intervals, reveal how the ice takes off (evaporates almost directly from a solid state to a gas). These images are the first to show evidence of the existence of water even at low latitudes. Surprisingly the white ice consisted of 99% pure water.
"We know there is ice below the surface in the high latitudes, but we found that the ice extends closer to the equator than we previously thought, based on the humid climate today." said Shane Brien of the University of Arizona, a member of the HiRISE camera – the high-resolution science camera on the Mars Rover (MRO) spacecraft.
"The second surprising discovery is that the ice exposed at the bottom of a crater created by a meteorite impact is so pure," said Brain. "The thought until now was that the ice accumulates below the surface between the grains of the soil, so that we get a 50-50 mixture between water and soil. We were able to discover, given the time it took for the ice to disappear from the landscape, that the mixture contained approximately one percent soil and 99% ice."
The scientists used several instruments on MRO to take a series of images, which discovered and confirmed the high purity of the water, and discovered several more places where ice was exposed in new craters, ranging from about half a meter to about 3 meters in diameter at five different sites on Mars.
Written by Nancy Atkinson. Translation: Avi Blizovsky
8 תגובות
Almond:
Yes.
Pressure plays an important role here, even though water seepage can also occur under Earth conditions as you will see here:
http://ga.water.usgs.gov/edu/watercyclesublimation.html
And here:
http://en.wikipedia.org/wiki/Sublimation_(chemistry)
The point is that below the temperature of the "triple point" bThe state diagram of matter, the appearance is what is expected since a liquid state is impossible.
The triple point of water is around zero degrees.
I hope that by 2012, buildings will be built there!! lol
a question-
Why does the ice take off?
After all, the temperature on Mars is below the freezing point of water.
Is the atmospheric pressure so low that the water rises despite the temperature?
Red Mars! Blue Mars! Green Mars!
Come on, start heating the Mars. There is already water. Now we need to create an atmosphere and a greenhouse effect.
Well, when can we ski there?
Well Michael 🙂
In light of this discovery, we may not need space ice trains 🙂
Water on the moon, water on Mars... doesn't that completely change the statistics of life outside of Earth?