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
Northern Lights Library Network meet local and national authors. Northern Lights Library Network Northern Lights Library Network (NLLN) is the largest (geographically) of seven multi-county, multitype library cooperative systems in the state of Minnesota. NLLN serves all types of libraries found in the 23 counties of Northwest and West Central Minnesota. The organization has over 300 member libraries including public libraries, school libraries, academic libraries (private and public), and special libraries. Northern Lights Library Network is established in Minnesota statute and receives funding from the Minnesota legislature via the Office of State Library Services within the Minnesota Department of Education. NLLN offices are located