Elliptical galaxies are characterized by which description?

• A. Chaotic, irregular form with no symmetry.
• B. Disk-like with spiral arms.
• C. A ring around a central hole.
• D. Approximately ellipsoidal shape and smooth, almost featureless image.

Answer: (D)

Elliptical galaxies show a smooth, featureless light profile and an roughly ellipsoidal shape. This means you wouldn’t see a disk or spiral arms; instead, the brightness falls off gradually in all directions, giving a uniform glow. This contrasts with spirals, which have disk-like structures and arms, or irregulars, which look chaotic. Ellipticals also tend to contain older stars and little gas or dust, so there’s little ongoing star formation to create new, bright features. So the description that fits is an approximately ellipsoidal shape and a smooth, almost featureless image.