Question

Arrange the following galaxies in order of decreasing size: spiral, giant elliptical, dwarf elliptical, and irregular

Answer 1

Arrange the following galaxies in order of decreasing size: spiral, giant elliptical, dwarf elliptical, and irregular

Answer 2

Order (largest to smallest):

1. Giant elliptical
2. Spiral
3. Irregular
4. Dwarf elliptical

Reason: Giant ellipticals (cD galaxies) are the most massive and most extended (tens to >100 kpc). Typical spirals (like the Milky Way) are next (~10–50 kpc). Irregulars are generally smaller and less structured (a few kpc). Dwarf ellipticals are the smallest class (substantially less massive and only a few kpc or less).