The Hubble classification scheme for galaxies sorts them by:
A) their evolutionary state
B) their mass
C) the amount of dust
D) the amount of dark matter
E) their visual appearance

Question

Quizplus · Accepted Answer

The Hubble classification scheme categorizes galaxies based on their visual appearance, specifically their shape, size, and structure. This system is often referred to as the "tuning fork diagram" due to its shape, which divides galaxies into three main groups: elliptical galaxies, spiral galaxies, and irregular galaxies. Within these groups, galaxies are further classified based on their specific visual characteristics, such as the number of arms in a spiral galaxy or the degree of elongation in an elliptical galaxy.

The Hubble Classification Scheme for Galaxies Sorts Them By