Alternative definitions (0), class: vernacular (0)
Term: Galaxies

Generally, a large body of gas, dust, and stars held together by their mutual gravitational attraction and ranging in mass from about 10^6 to 10^13 M_sun. If a galaxy also contains dark matter its mass will be much larger. Galaxies are grouped into three main categories: spiral galaxies, elliptical galaxies, and irregular galaxies.

Created 2023.04.16
Last Modified 2023.04.16
Contributed by Ryan McGranaghan