Originally Posted by Celestial Mechanic

Most of the starlight measured in these experiments do not pass anywhere near the surface; the closest they ever get to the Sun is several solar radii away.

So what are these "emanations?"

The apparent edge of a disk-like body (Sun, Moon, planets, etc.) is called the limb.

Again, what are these "emanations" and how is it that they attract light rather than repelling it?