The Odyssey orbiter first reported in 2001 that the region was rich in water ice, mostly in the form of permafrost.
CNN: Lander grabs Mars water, will see if it's life-supporting
The shape of the polar cap indicates that it is composed primarily of water ice, with a volume of 1.2 million cubic kilometres.
It could identify soil types, verify the presence of water ice and dry ice at the poles, and even track traces of water underground.
But some are also thought to harbour water ice, which could be used as a raw material for the manufacture of rocket propellant or even breathable air.
About the same size as fine particles of cigarette smoke, the grains are made of silicate minerals and carbon-based materials coated with ice - principally water ice and frozen carbon monoxide.
This week the team decided to use a scoop on the arm to dig up a sample of dirt and found it contained about 1 percent water ice, NASA researchers said.
CNN: Lander grabs Mars water, will see if it's life-supporting
The idea that the surface of Mercury has ice has been kicking around since the 1970s, and radio telescope images in 1991 showed some signs that were consistent with there being water ice on the surface.
"We've seen evidence for this water ice before in observations by the Mars Odyssey orbiter and in disappearing chunks observed by Phoenix last month, but this is the first time Martian water has been touched and tasted, " he said.
CNN: Lander grabs Mars water, will see if it's life-supporting
We're talking about frozen carbon dioxide, frozen other kinds of gases, but also water ice, and it's thought by most astronomers now that, originally, comets contributed a huge amount of water to Earth and a lot of what is now in our ocean.
"The guess is that both the water and the dark material, which we think is organic-rich material, were delivered by the same objects impacting Mercury: some mixture of comets and the kinds of asteroids that are rich in organic and volatile material like water ice, " Prof Solomon said.
Direct contact of molten lava with water or ice also leads to explosions which eject fine dust.
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Water-ice covers Charon, while Pluto's surface is predominantly nitrogen frost with traces of methane and carbon monoxide ices.
Comets are made up of water, ice, dust and other elements and minerals, all loosely packed together, Battams said.
In any case, no trace of water or ice was detected anywhere, even in the deepest of Mathilde's craters.
He also says drinking water and ice is finally reaching some of the ravaged coastal areas and other critical supplies are on their way.
There's an important distinction between these two types of objects: Comets are mostly water, ice and dust, while asteroids are mostly rock or metal.
They announced preliminary findings in March but now have good data confirming large amounts of the water-ice just beneath the surface south of 60 degrees latitude.
With the right conditions you can turn water into ice or steam, but did you know that a blender can help you turn it into powder too?
The effects of water and ice, too, are likely to be intermittent, and to trail off a bit as the reserves on top of the mountain are used up.
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"At very low angles, we think that some water-ice from the comet would remain intact as a liquid puddle concentrated with organic molecules, ideal for the development of life, " Blank said.
Johnson, the deputy director of Federal Emergency Management Agency (FEMA), said Monday that Hurricane Gustav was expected to be a catastrophic storm when it reached land late Monday morning, but there was enough food, water, ice and other supplies stockpiled for 1 million victims over the next three days.
Johnson, the deputy director of Federal Emergency Management Agency (FEMA), said Monday that Hurricane Gustav was expected to be a catastrophic storm when it slammed into the Gulf Coast late Monday morning, but there was enough food, water, ice and other supplies stockpiled for 1 million victims over the next three days.
This has enabled scientists to estimate the volume of water in the ice cap and speculate that much of the planet's original water is either hidden below the surface or missing.
Soaking the onion slices in ice water, Mr. Schwartz says, keeps them firm and mellows their bite.
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The measurements revealed a previously unreported inflow of warm water under the ice from the north Atlantic.
The trouble is that there isn't enough ice water to fill the veins of all the fresh, young hedgies.
Ice water, soft drinks and coffee are among the choices available to Heater and others who evacuated to the stadium.
CNN: Evacuees who fled to Qualcomm say they hope to go back home
It's filled with ice water that's been flavored with fruits, veggies, or herbs: mint, orange, lemon basil, ginger, and cucumber.
In either case, if the flavor is too pungent, let the slices sit a few minutes in ice water until they crisp and mellow.
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