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
A Blaze in the Northern Sky began writing songs with more black metal traits. This yielded the instrumental demo "Goatlord". After recording "Goatlord", three of the band members—Fenriz, Nocturno Culto and Zephyrous—decided that they wanted to focus on making black metal music. Bassist Nilsen disliked this shift in direction, and quit the band. However, he agreed to record his bass parts for the album as a session member. "A Blaze in the Northern Sky" was recorded during August 1991 at Creative Studios in Kolbotn; the same studio where Mayhem recorded their influential "Deathcrush" EP. In an interview, Fenriz said that the album was somewhat "rushed" and