Distance of the horizon
|Updated June 01, 2013
Where is the horizon?
Horizon and curvature of the Earth
The horizon on Earth, is the line that limits the distant view. This line seems to separate the sky from the earth or the sea. The circular line of the horizon does not lie at an infinite distance to the contrary, it is quite close but the distance varies depending on the height of the observation. The observation line of the horizon is tangent to the surface and limits what can be observed because of his own position or situation. The horizon takes into account the curvature of the Earth.
Image: On this beautiful sunset far, you can see the curvature of the Earth's atmosphere. This image of the horizon of the Earth was taken by the crew of STS-129 Space Shuttle international. Image Credit: NASA