Eight is two times two times two.the first cubic number after 1.Within architecture the octagon often signifies the transition between Heaven and Earth,as a bridge between the square and the circle.

Former Heaven sequence,said to represent the ideal pattern of transformations in the cosmos.In religious symbolism,the eight step is often associated with spiritual evolution or salvation.

Three steps before enter the octagonal fountain… Earth is the third planet from the sun and fifth largest.

In music three to two and three to one define intervals of the fifth and its octave,the most beautiful harmonies and the key to ancient tunings. three male in some cultures,female in others,three like a tree bridges heaven and earth.It is the return to unity,past present and future…knower,knowing,and the known…

Five marries male and female. five the number of water,water one of the five platonic solids.Dry things are either dead or awaiting water.

Unlike threes and fours,fives disdain the plane,waiting for the third dimension to fit together to produce the fifth element.

As for the symbolism of starts, all I can say for sure is that we as a species consistently, cross-culturally, use stars as symbols. And all symbols carry meaning.