What weather has galaxies?

The weather is clear and there is no light on the ground (mountain, country and sea), so the visibility is high and everyone can see the Milky Way. Now the city is seriously polluted, and there are too many lights to see.

Seasonal, the solar system is not in the center of the Milky Way. Because of the revolution of the earth, the earth is facing the central part of the Milky Way in summer night, where there are many stars, so the brightness of the Milky Way is high and easy to observe. On winter nights, the earth is facing the periphery of the Milky Way, where there are few stars, so the Milky Way is very dark, which is not conducive to observation.