As already said, the cleaning has uncovered many details of great importance, once invisible due to the layer of grime, dust and smoke!
In the Creation of the Sun and the Moon, God creates the Sun with his right hand and the Moon with his left hand.
Now, the light of the Moon is almost cold and the Angel, just below God's left arm,is covering from it with a cloack, to warm itself.
But the light of the Sun is dazzling and another Angel is shielding its eyes: thanks to the cleaning now is possible to observe the shadow over the Angel's eyes.
These delightful details give us a fascinating insight into how the great Michelangelo, having almost completed his task, was now more relaxed, engaged in his work on the ceiling with great serenity!