New Evidence For Liquid Water Beneath The South Polar Ice Cap Of Mars
Автор: The Space Invaders
Загружено: 2022-10-28
Просмотров: 1936
Описание:
New evidence for liquid water beneath the south polar ice cap of Mars.
Like Earth, Mars has thick water ice caps at both poles, roughly equivalent in combined volume to the Greenland Ice Sheet.
Unlike Earth's ice sheets however, which are underlain by water-filled channels and even large subglacial lakes, the polar ice caps on Mars have until recently been thought to be frozen solid all the way to their beds due to the cold Martian climate.
In 2018, evidence from the European Space Agency's Mars Express satellite challenged this assumption.
The satellite has an ice-penetrating radar called MARSIS, which can see through Mars' southern ice cap.
It revealed an area at the base of the ice that strongly reflected the radar signal, which was interpreted as an area of liquid water beneath the ice cap.
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