>>21127100Let's try to estimate the number of molecules in the atmosphere of Mars. The main part of the atmosphere of Mars is carbon dioxide with a molar mass of 44, and air (a mixture of nitrogen and oxygen) has about 29. Therefore, the number of molecules that scatter light, giving color and brightness to the Martian sky, is another 1.5 times less (than on Earth at an altitude of 31 km - L.K.).
And here is his conclusion:
The brightness of the sky on Mars relative to the light of stars, which can be taken as a standard, will be 140-215 times less than on Earth.
To understand whether this is a lot or a little for the sky - "140-200 times", I took two neutral gray filters from the optical glass kit, NS-7 and NS-9, and installed them against the background of a landscape with a blue sky. One glass (NS-7) reduced the light by 2.5 times, and the other, NS-9, darker, by 60 times.
