Spiral Galaxy Facts & Definition

A description of spiral galaxies, a family of galaxies that includes Earth

Types of Galaxies - Spiral, Elliptical & Irregular Galaxies

Constructing and Interpreting Scatter Plots for Bivariate Measurement

What is a Spiral Galaxy - Galaxies & Star Clusters in the Universe

Messier 81: the Great Bear's grand-design spiral galaxy – Astronomy Now

Romeo and Juliet: The Story of Galaxy Collisions

17 Unbelievable Facts About Galactic Astronomy

Andromeda Galaxy: definition, Facts, distance, location

Astronomy & Astrophysics 101: Spiral Galaxy

Oldest spiral galaxy in universe discovered