y cant we see ice all over mars since it is so cold[how cold is it?]?

Answer 1

There is only enough surface water on Mars to form the polar ice caps. The ice caps on Mars are supposedly mostly water-ice. Dry-ice, (solid carbon dioxide), also forms part of the ice-caps, especially on the southern polar ice-cap. The temperature on Mars is usually well below freezing. However, along the equator, and probably even in the more polar latitudes, the temperature can sometimes get above freezing, (but the freezing point of water on Mars is different than on Earth because of the lower atmospheric pressure on Mars)..

The ice-caps have been observed to grow and shrink with the seasons on Mars, so apparently it gets warm enough there for the ice to melt occasionally. However, its not entirely clear if this results in the temporary existence of liquid water, or if the water just boils away to a gaseous state due to the low atmospheric pressure on Mars.

Surface temp.:
Celsius/Fahrenheit
minimum: −87°C/−125°F
average: −46°C/−51°F
maximum −5°C/23°F:

Answer 2

Azure Z, you're right on the money.

The temps at the Martian poles are cold enough to freeze both water and CO2. The temps at the equatorial regions are warmer, 20 degrees F to 30 degrees F. My bet is that subterranean water may still exist on Mars as ice, but the polar ice caps are predominantly CO2.

Answer 3

Because the "ice caps" we see on Mars are not water ice, but frozen carbon dioxide (dry ice) which freezes at -56.6°C.

The average surface temperature of Mars is ~ -55°C.

Answer 4

On the moon, there is no atmosphere, and no water, even you can see some where land is white, but its not ice, its just sand which is white, actually water can convert into the ice when it will go on its freezing point. at the short, there are no water, and no suitable atmosphere for ice.

Answer 5

cuz theres no water to freeze