Explain the evidence. Thanks!
2007-04-02 08:21:45 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
They're composed mainly of dry ice - frozen Carbon Dioxide. There is some water ice mixed in, but not very much (that's from the Mars Orbiter). Since Mars' atmosphere is much thinner than Earth's, and composed almost all of CO2, the ice, and since the temperature in the polar regions of mars are consistently below the freezing point of CO2, dry ice just naturally collects there.
It's interesting also - dry ice never forms a liquid - it sublimates - going right from solid to gas.
2007-04-02 08:34:54 · answer #1 · answered by quantumclaustrophobe 7 · 0⤊ 0⤋
It is thought and hoped that it is ice,but I have read that it might be dry ice or CO2 ice. There are many features that look like that Mars had running water at one time which would mean that it was sure hot. If Mars was that hot the earth would of been much hotter.
2007-04-02 15:27:59 · answer #2 · answered by JOHNNIE B 7 · 0⤊ 0⤋
The planet {MARS} has a very dense ice-cap in the deepest region of its' underground soil followed by traces of frozen ice that scientist believe was once rivers and huge lakes, that is, before the order of the great star-system was rotated by a great meteor storm. Long,long,long ago, before "Earth" concieved life.
2007-04-02 15:30:13 · answer #3 · answered by romaniascott 4 · 0⤊ 0⤋