From what was learned in Problem 12 what can be surmised about the light from a distant star once it reaches the earth? If a star can be represented as a delta function or “point source” very far...

From what was learned in Problem 12 what can be surmised about

the light from a distant star once it reaches the earth?

If a star can be represented as a delta function or “point source” very

far away, why do we see points in the sky at night rather than a

uniform illumination from them as suggested by Problem 13?