In the new work, the authors combined data from NASA's Phoenix Mars lander and the Mars orbiter.
Mars is a dusty planet, so much of its ice also contains this dust. Therefore, the snow and ice on the planet are darker than what we see on Earth.
If there is a lot of dust, then ice or snow can melt quickly. In this case, there is a possibility that under the ice there is a layer of liquid water protected from melting, the researchers noted.
The authors, based on their data, stated thatthe ice dug by the Phoenix Mars lander was the result of dusty snowfall in the last million. There is a popular belief among scientists that Mars has experienced several ice ages throughout its history, so the ice in the middle latitudes may be the result of ancient dusty snowfall.
The team plans to continue analyzing the effects of ice on Mars to understand how likely the ice is to melt.
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