In astronomy, an extraterrestrial sky is a view of outer space from the surface of an astronomical body other than Earth.
A historic extraterrestrial sky—Earthrise, the Earth viewed from the Moon. Taken by Apollo 8 astronaut William Anders while in lunar orbit, December 24, 1968
Diagram for the formula of the angular diameter
Zodiacal light viewed from the Moon, during Apollo 15
The thin lunar atmosphere is visible on the Moon's surface at sunrise and sunset with the lunar horizon glow and lunar twilight rays, like Earth's crepuscular rays. This Apollo 17 sketch depicts the glow and rays among the general zodiacal light.
The sky is an unobstructed view upward from the surface of the Earth. It includes the atmosphere and outer space. It may also be considered a place between the ground and outer space, thus distinct from outer space.
View of the night sky in July from Earth
The day's blue sky, clouds and the Moon
Sky during day time
The crescent Moon remains visible just moments before sunrise.