http://www.colorado.edu/philosophy/vstenger/Briefs/Priv.htm
Have you ever wondered why the angular diameters of the moon and sun as viewed from Earth are almost exactly the same, though the two celestial objects differ greatly in size and distance from Earth? Without that coincidence, we would never experience the type of total eclipse of the sun in which we can actually view starlight near the edge of the sun's disc as the moon blocks off the sun's light.
Have you ever wondered why the angular diameters of the moon and sun as viewed from Earth are almost exactly the same, though the two celestial objects differ greatly in size and distance from Earth? Without that coincidence, we would never experience the type of total eclipse of the sun in which we can actually view starlight near the edge of the sun's disc as the moon blocks off the sun's light.
