Tolong jelaskan mengenai Tudung es kutub Mars

Planet Mars memiliki dua tudung es kutub permanen. Pada musim dingin di kutub tersebut, wilayah tersebut mengalami kegelapan dan menyebabkan deposisi 25–30% atmosfer dalam kandungan es CO2 (es kering).

https://sharad.psi.edu/3D/movies/SHARAD_PB3D_depth_20161223.mp4  High-resolution movie showing the interior of the north polar ice cap in 3D, as determined with SHARAD radar data

https://sharad.psi.edu/3D/movies/SHARAD_PA3D_depth_20170105.mp4  High-resolution movie showing the interior of the south polar ice cap in 3D, as determined with SHARAD radar data