\u201cWe know there is water ice in the area surrounding the north pole of Mars, but there has been widespread disagreement as to how dusty that ice is,\u201d Aditya Khuller, the study\u2019s co-author and a planetary scientist at the University of Washington, said in the statement.<\/p>\n
A gift from nature <\/p>\n
Ice may be among the weirdest natural miracles in the universe. It\u2019s a molecular lab for researchers probing physics at extreme regimes<\/a>. It\u2019s no secret that ice is one of the key signatures astronomers look for in the search for extraterrestrial life. Long cylinders of ice\u2014ice cores\u2014preserve information about the atmosphere from millions of years ago. Also, it keeps your drink cold in the summer.<\/p>\n Accordingly, studying Martian ice has led to huge advances in what we know about its \u201cformation, evolution, and persistence, and offers insight into the broader history of Martian climate,\u201d the team wrote in the paper. It\u2019s also an integral part of investigating how, despite having vastly different atmospheres, Earth and Mars share some weather and geological patterns<\/a>.<\/p>\n Small but significant <\/p>\n The latest study builds upon the same team\u2019s previous work<\/a>, which tested whether three common models used to analyze Martian ice held up for studying Antarctic ice on Earth. These techniques, called radiative transfer models, infer the grain radius of ice based on the albedo, or the reflectance of sunlight by a surface.<\/p>\n But these methods were initially devised to study soil on the Moon, Khuller said in the statement. So when the researchers found the models didn\u2019t work that well for Earth, that raised another\u2014arguably bigger\u2014question: Does it really work for Mars? To find out, the team referenced an alternative method to study snow and ice and made the appropriate adaptations to account for known conditions at Mars. Then, it applied the new framework to six locations at the Martian north pole.<\/p>\n The researchers found that conventional models indeed overestimated the impurity of Martian ice. Specifically, dustier, darker ice forms in the winter. And of course, Mars is buffeted<\/a> by huge dust storms. But dusty ice also vaporizes faster\u2014especially during the summer\u2014so what ends up getting exposed is cleaner, older ice, Khuller explained.<\/p>\n Moving the needle <\/p>\n Although it\u2019s \u201cdifficult to ascertain how exactly dust is incorporated into north polar ice,\u201d our best estimates suggest the proportion of dust is lower than we\u2019d expect, according to the paper. Cleaner, older subsurface ice may also hint at changes in Mars\u2019s atmospheric pressure in the past that curbed the impact of dust storms, the team added in the study.<\/p>\n![\"Mars](\"https:\/\/www.newsbeep.com\/ca\/wp-content\/uploads\/2026\/10\/mars-north-pole-locations-302x336.jpg\")
A map of the six north polar locations where water ice is exposed at the surface that were analyzed in the study. \u00a9 Khuller et al., 2026 <\/p>\n