Night Time

Night time is the period from sunset to sunrise in each twenty-four hours, when the Sun is below the horizon. However it can be defined differently and is subjective. Night time illumination is provided by a combination of moonlight, planetary light, starlight, airglow and sometimes aurorae, lightning, and bioluminescence. Artificial lighting is often referred to as light pollution because it can interfere with observational astronomy and ecosystems. This category is for photos of the Moon and other things taken in evenings and at night time.

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