Horizon
Videos
Most commonly, the horizon is the border between the surface of a celestial body and its sky when viewed from the perspective of an observer on or above the surface of the celestial body. This concept
The curvature of Earth's horizon as observed from a Space Shuttle at an altitude of 226 km (140 mi).
Bird's-eye view created with a horizon line above the subject of the scene (in this case, Paris in 1850).
A sequence of pictures taken at Strait of Magellan, Chile, showing a tanker ship sailing towards the camera and rising over the horizon, demonstrating the Earth's curvature. Distance at first picture is about 18 km which would imply a theoretical horizon vertical drop of about 23 meters. Ship length is 186 m.
Sky
Videos
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 fr
Horizon
…Most commonly, the horizon is the border between the surface of a celestial body and its sky when viewed from the perspective of an observer on or above the surface of the celestial body. This concept is further refined as: The true or geometric…
The night sky over Slovenia in July
Cirriform clouds and a quarter Moon in the blue daytime sky over Germany
Sky during day time
The crescent Moon remains visible just moments before sunrise.