Directorios

Enlace: http://www.exploratorium.edu/eclipse/index.html

Descripción: Exploratorium. The museum of science, art and human perception.
«To see a total solar eclipse, you have to be in just the right spot on the earth. When you look up in the sky at the sun and the moon, you notice a strange coincidence--both look the same size in the sky. Both the sun and the moon look about one-half degree in diameter. Now, they're not really the same size. The sun's diameter is actually 400 times the moon's diameter. But, you must also take into account that the sun is also 400 times further away from the earth, reducing its apparent size to the same as the moon's.»