Blue Marble the Uniform Earth Image


  Uri Lachish  
IAI

The "blue marble" the full earth image was taken by the Apollo 17 team in 1972. The earth image includes large areas of gas phase – clouds, liquid phase – oceans, and solid phase – land, and the uniformity is nearly true for each phase separately. This feature is not discussed in the literature, not even mentioned in it. The uniformity does not comply with Lambert's scattering law. The uniformity is a direct outcome of a single sunlight scattering by the object surface, and there is no need of further assumptions or models to justify it.