Night sky night sky. Aircraft are also visible at night, distinguishable at a distance from other objects because their lights blink. Night sky The term night sky, usually associated with astronomy from Earth, refers to the nighttime appearance of celestial objects like stars, planets, and the Moon, which are visible in a clear sky between sunset and sunrise, when the Sun is below the horizon. Natural light sources in a night sky include moonlight, starlight, and airglow, depending on location and timing. Aurorae light up the skies above the polar circles. Occasionally, a large coronal mass ejection from the Sun or simply
County of Northern Lights 2016 Census of Population conducted by Statistics Canada, Northern Lights recorded a population of 4,200 living in 1,538 of its 1,846 total private dwellings, a change from its 2011 population of 4,117. This includes the population of the Paddle Prairie Metis Settlement (544), located within the census subdivision that is a municipality independent of the County of Northern Lights. With a land area of , the census subdivision had a population density of in 2016. Excluding the Paddle Prairie Metis Settlement, the County of Northern Lights had a population of 3,656 in 2016, a change of from its 2011 population