What does a spiral galaxy look like when seen edge-on?
A) Round,but without spiral arms because they are hidden
B) A thick line curved into a spiral shape
C) A thick,flat line with a bulge in the center
D) A thick,flat line

Question

Quizplus · Accepted Answer

When seen edge-on, a spiral galaxy appears as a thick, flat line with a bulge in the center. This is because the dust and gas in the galaxy disc block the light from the stars in the spiral arms, making them difficult to see. The bulge in the center is often composed of older stars that are tightly packed together.

What Does a Spiral Galaxy Look Like When Seen Edge-On