Is there Water on Mars?

Question

yet this question seems simple, i erally want to know how can you prove those things on the photgraph are not other element but H2O??

Answer 1

liquid water cannot presently exist on mars. the reason for this is that the temperature and pressure of the martian atmosphere are not sufficient for water to exist as a liquid. click this link to see a phase diagram for water that illustrates the point.
http://www.cbu.edu/~mcondren/water-phase...
you can see from the picture that liquid water can only exist in a very defined range of temperatures and pressures. mars' pressure is just too low (about 2% of earth's atmospheric pressure).

there is a great deal of evidence that liquid water has existed on mars in the distant past when mars had a much denser atmosphere that has since been "blown" away by solar wind. thankfully, we have a very strong, global magnetic field that prevents that from happening here. much of the evidence was gathered by the most recent rovers sent to mars, Spirit and Opportunity. they discovered erosion patterns that suggest water was the source of the erosion and they also discovered several minerals that only form in the presence of liquid water.

there are no signs of intelligent life on mars, however there is a meteorite we have discovered on earth that actually came from mars and many scientists have concluded the analysis of this rock shows fossils of microscopic organisms. there is not a consensus on this point though...as other scientists do not have the same conclusion.

we cannot live on mars the same way we do here because mars has too little oxygen and not enough air pressure for us to survive. we could live on mars if we had some pressurized, air tight structure (just like the space station has it's own air that pressurizes it inside, but it's air tight so that pressure doesn't escape into the vaccuum of space) or if we had suits that astronauts wear. such a building would also allow us to have liquid water. since we can pressurize it and heat/cool it, liquid water could exist in such a building. our technology is sufficient enough to protect us so we could live on mars (including make air and water and recycle water, and grow food, etc.)... so we can definitely handle it.

why would anyone want to live there? to learn more about mars, to explore mars. for those reasons alone, many, especially scientists, would want to live there...at least for a while. i definitely wouldn't want to live there forever. earth is a great place that our species is suited to and it's our home, but mars is definitely interesting and we can get there and live there if we try hard enough.

Answer 2

There are a few reasons we think that there is water on Mars. One is that there seem to be riverbeds and flow channels that must have been formed by water. Another is that the entire Northern hemisphere of the planet looks like it was once underwater because it's so incredibly flat and smooth, like a seabed.

But the real clincher that there is still water on Mars TODAY is the polar icecaps. In the summertime on Mars, these icecaps (which are mostly made of CO2 ice (or "dry ice")) shrink as they heat up and evaporate, but there is always some stuff left over that isn't melting or evaporating. This stuff must be made of something else that stays a solid at those temperatures. Since it's clearly an ice, and since water is the only common substance in the Solar System that's still a solid ice at those temperatures, it must be water. Recent space probe measurements have backed up this line of reasoning.

Answer 3

Do you mean... like a lake? No.

Signs that water WAS on Mars? Yes.

Still there as Ice or beneath the surface? Working on it.

Answer 4

with the right conditions and instruments, one can determine what things are made of at a distance, simply from the light they emit. like many molecules, water has a characteristic spectroscopic 'fingerprint'. the south polar cap of mars is mostly water ice.

Answer 5

particular. in case you regarded on the information you will see the robotic took photos of a few bits of white stuff that disappears over the direction of a few hours. it relatively is achieveable extremely ice.

Answer 6

It is belived that water is frozen under the surface of the planet..

Answer 7

Water, no, ice, yes.

Answer 8

http://www.nasa.gov/press-release/nasa-confirms-evidence-that-liquid-water-flows-on-today-s-mars

Answer 9

yes but is is frozen.