The planet Mars has two permanent polar ice caps of water ice and some dry ice (frozen carbon dioxide, CO 2). Above kilometer-thick layers of water ice permafrost, slabs of dry ice are deposited during a pole's winter, [1] [2] lying in continuous darkness, causing 25–30% of the atmosphere being deposited

2023年10月26日 · Buried ice will be a vital resource for astronauts on Mars, serving as drinking water and a key ingredient for rocket fuel. The blue areas on this map of Mars are regions where NASA missions have detected subsurface water ice …

Evidence for solid, liquid, and gaseous forms of water has been found on Mars. Water ice likely exists in the polar ice caps, glaciers, surface ice, subsurface ice, in clouds and as snow precipitation. Water vapor has been detected in small amounts in the atmosphere.

2018年11月27日 · A story of changes at the South Pole of Mars is told by its icy deposits. Remnants of a formerly more extensive deposit composed of dry ice form what is known as the south polar residual cap. Scientists call it "residual" because it remains after the much larger seasonal cap disappears each summer.

2019年12月10日 · This rainbow-colored map shows underground water ice on Mars. Cool colors are closer to the surface than warm colors; black zones indicate areas where a spacecraft would sink into fine dust; the outlined box represents the ideal region to send astronauts for them to …

2024年10月17日 · Mars scientists are divided about whether ice can actually melt when exposed to the Martian surface. That’s due to the planet’s thin, dry atmosphere, where water ice is believed to sublimate — turn directly into gas — the way dry ice does on Earth.

2018年11月14日 · Why Study Ice on Mars? On Earth, there’s a plethora of variables driving environmental change, from natural processes to the activities of humans. While Mars is most similar to Earth of all the known extraterrestrial worlds, its climate is still extremely different from our watery abode.

2025年2月28日 · The north pole of Mars is slowly sinking under the weight of an ice cap that only formed within the past few million years.

2025年3月17日 · A team of German planetary scientists has concluded that a three-kilometer-thick northern polar ice cap on Mars has a “surprisingly young” age of between 2 and 12 million years.1,2 This age is much younger than uniformitarian age estimates for any other large feature on the red planet1 and is consistent with other clues suggesting that Mars is relatively young, …

2025年3月19日 · This ice could become a critical resource for future crewed missions to Mars, providing both drinking water and a key component for fuel production. As such, these regions are seen as prime candidates for landing sites. The discovery is expected to significantly influence Mars exploration plans worldwide. Ice Found at the Bottom of Craters