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Concept
Galaxies
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Summary
Galaxies are
Massive systems
composed of stars,
Stellar Remnants
,
Interstellar Gas
, dust, and
Dark Matter
, bound together by gravity. They are the fundamental
Building Blocks Of The Universe
, each containing
Millions to trillions of stars
and varying greatly in size, structure, and composition.
Concepts
Spiral Galaxies
Elliptical Galaxies
Irregular Galaxies
Dark Matter
Interstellar Medium
Stellar Evolution
Galaxy Formation
Redshift
Hubble's Law
Cosmic Distance Ladder
Galaxy Clusters
Active Galactic Nucleus
Gravitational Lensing
Cosmic Reionization
Extragalactic Astronomy
Virgo
Cosmic Mysteries
Relevant Degrees
Astronomical Instruments and Techniques 67%
Stars and Stellar Systems 33%
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