The sun has a shadow. It must have one, because we know there are other bigger suns out there, in space. Therefore, having a bigger light source behind him, his shadow must be cast, at some point, onto earth. But we don’t see it, because the sun itself is a light source, and it cancels it. That does not cancel its existence, in concept.

So, let’s start from the beginning. The sun’s shadow with bird:

Here is the sun, in the sky. The line of the horizon, a bird, for reference. The bird’s shadow on the ground. And, of course, the sun’s shadow.
Sun shadow with trees:

Tree-shadow-shaped sun shadows:

Maybe the shadow is visible, but it merges with other things’s shadows.
Sun shadow. A Study:

This is what it would look like if it were to fall on a fence, grass, a houses. Not different from other shadows.
Now.
If the sun were to be a person, the body would be the shadow, and the shadow would have a shadow, because the head is a light source:

The sun’s shadow has a shadow of its own because it’s head it is the sun it self.
And, why not? A tree’s shadow has for a shadow a shadow of a tree-shaped sun:

Ok, I know. Since it is just a concept, it does not mean we can do what we want with it. (or do we?)



