A low Earth orbit (below 2000km) satellite would be a few centimetres above the globe surface, so would need a wide angle lens to see to the 'edge'. It would be seeing less than half the world, so one continent could seem to cover the surface. Simple geometry. Geostationary satellites (36000km) get a different view. You need to know how each photo was taken.

Just enjoy the wonder rather than seeking ulterior motives.

How about this?