Galaxy Types

Real galaxies are classified according to their observed structure. One of the more commonly used classification schemes is known as the Hubble sequence, which divides galaxies into broad categories based on the presence or absence of spiral arms, among other features.

Properties

 * The Galaxy Type property is located in the Galaxy tab in the Galaxy's properties panel. This property will determine which of the following properties will appear:
 * The Spiral Arms, Pitch Angle, and Spiral Arm Noise properties affect the structure of a spiral galaxy, and will only appear for spiral galaxies.
 * The Elliptical Ratio property affects the structure of an elliptical, and will only appear for elliptical galaxies.

Models
Universe Sandbox uses an adapted Hubble classification. Galaxy types include spiral galaxies, elliptical galaxies, and irregular galaxies. Spiral and elliptical galaxy types include several subtypes. The Galaxy Type property of a Galaxy determines the orbits of the Galaxy Nebula objects in the galaxy.