How does the appearance of spiral galaxies vary? Select the two correct answers.(1 point) Responses Some have a band of stars and materials through their middle, but others do not. Some have a band of stars and materials through their middle, but others do not. They vary in how tightly their arms are wound. They vary in how tightly their arms are wound. They vary in the brightness of stars located on their arms. They vary in the brightness of stars located on their arms. Some are more elongated in shape than others.

Answer 1

The two correct answers regarding the variation in the appearance of spiral galaxies are:

1. Some have a band of stars and materials through their middle, but others do not.
2. They vary in how tightly their arms are wound.

These variations help categorize different types of spiral galaxies.