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Galaxies and Cosmic HistoryModule 2Galaxy Families and Environments
Module 2 / Lesson 5 of 2436 min
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What Makes a Galaxy Spiral, Elliptical, Lenticular, or Irregular?

Which measured features define a galaxy family, and which features do not?

Compare four galaxy morphology families with real Hubble observations and a repeatable structural checklist, while keeping orientation and formation history as explicit limits.

A generated scientific concept showing a spiral, smooth elliptical, lens-shaped lenticular, and clumpy irregular galaxy across one dark field.
Vastward-generated concept illustration. It previews four morphology families; real Hubble galaxy observations appear in the lesson below.

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