Martian Polar Crater Ice Shifts with Seasonal Frost

• Mars shares many landforms and weather patterns with Earth, including polar ice caps.
• Mars' north polar ice cap is composed of water ice, similar to Earth's polar ice caps.
• Seasonal frost causes shifts in the ice within Martian polar craters.
• The phenomenon of ice shifting with seasonal frost is a shared feature between Mars and Earth.
• The major difference is that Earth's polar ice caps are both composed of water, while Mars' north polar ice cap is composed only of water.