So in the process of stitching the images together to
make the panorama of yesterday's image
there are a nuber of stages along the way. (Or, to be technical
for the cartographers out there, different projections).
Taking the flat images to represent a spherical view of the world
and then projecting them back on to your flat monitor is not unlike
making a flat map out of the round globe. Of course, along the way
there is room for a little bit of creativity.