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Physics
Astronomy
Galaxies
All Subcategories (109)
Age of Galaxies
Andromeda Galaxy
Andromeda Galaxy properties
Black holes and galaxy formation
Calculating the number of galaxies
Centering mechanisms
Characteristics
Characteristics and Comparison
Characteristics and Formation
Characteristics of Galaxies
Characteristics of Old Galaxies in Decline
Classification
Classification and Location
Classification of galaxies
Collisions
Collisions and Interactions
Collisions/Interactions
Color and Motion
Colors and Motion
Comparison of Milky Way and Andromeda galaxies
Components
Composition
Dark Matter
Description of a galaxy
Distance and Gravitational Pull
Distribution
Distribution and Quantity
Earth's Galaxy
Effects of Galaxy Collisions
Elliptical Galaxies
Emission lines
Farthest-away galaxies
Features of Galaxies
Formation
Formation and characteristics
Formation of Barred Spiral Galaxies
Formation of bars in barred spiral galaxies
Formation theories
Galactic Center and Binding Forces
Galactic center and gravitational forces
Galactic Centers
Galactic Collisions
Galactic Motion
Galactic Structure
Galaxy characteristics
Galaxy Classification
Galaxy Collisions
Galaxy Components
Galaxy Evolution
Galaxy Evolution Factors
Galaxy mergers
Galaxy motion
Galaxy Movement
Galaxy Terms and Definitions
Galaxy types
Interactions
Interactions between galaxies
Interactions/Collisions
Irregular galaxies
Local Group
Location of Earth's Solar System
Milky Way
Milky Way and Andromeda
Milky Way and Andromeda galaxies
Milky Way and other galaxies
Milky Way Galaxies
Milky Way Galaxy
Milky Way Structure and Composition
Motion
Motion and Expansion
Motion/Direction
Movement of Galaxies
Number of Galaxies in the Observable Universe
Number of Stars
Observability
Observations and measurements
Properties
Properties and Interactions
Properties of galaxies in decline
Quantity of galaxies in the observable universe
Red shifts
Redshifted galaxies and distant stars
Redshifts
Shape and Classification
Shape and Size of Galaxies
Shapes
Size and Comparison
Spectra Analysis
Spectral lines and universe expansion
Spectral shift
Spectral Shifts
Spiral
Spiral and Elliptical Galaxies
Spiral Galaxies
Stellar Age
Structure and formation
Supermassive black holes and quasars
The Andromeda Galaxy / Scientific notation
The Andromenia Spiral
The force that holds stars together in galaxies
The Milky Way
Types
Types and shapes of galaxies
Types of Galaxies
Types of Galaxies or Galaxy Classifications
Types of Galaxies or Redshift
Unique and Rare Galaxies
Universe Expansion Evidence
Visible galaxies from Earth
Parent Categories (9)
Astronomy
Astronomy and Space
Astronomy or Space
Celestial Bodies
Celestial Objects
Science & Astronomy
Science and Astronomy
Science or Astronomy
Universe or Cosmology