An unlabeled hierarchical diagram of some astronomical bodies is shown. the labels a, b, c, and d can be used to represent galaxies, solar system, clusters, universe, and planets.

part 1: which four astronomical bodies would you choose to represent the four labels in the diagram?
part 2: justify your choice based on the hierarchical relationships in astronomical bodies.

A: Universe

B: Clusters

C: Galaxy

D: Solar Systems

I put it in this order because D is smaller and darker and rounder like a planet. D is the solar system because it contains the planets. C is the galaxy because it holds all of the billions and trillions of stars. B is clusters because the universe is contained with all the other galaxys. A is the universe because it contains the galaxy, the stars in the galaxy, the solar system, the planets in the solar system, and the all other galaxys.

yes? sounds right, but you didn’t ask a question.

blue stars have the highest surface temp

stellar distances are usually expressed in light-years

the measure of a star's brightness is called magnitude

hope this !