Question

two types of spiral galaxies exist. a normal spiral galaxy is one kind. which phrase best describes the second type of spiral galaxy?

• is football - shaped
• is irregularly shaped
• has arms that start close to the center
• has a bar through the middle from which arms extend

Explanation:

There are two main types of spiral galaxies: normal spiral galaxies and barred - spiral galaxies. Barred - spiral galaxies have a bar of stars through the middle from which arms extend.

Answer:

D. has a bar through the middle from which arms extend