Universe

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Universe

• ALL space and everything that is in it.

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Supercluster

• Virgo

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• Our Cluster or Galaxy GroupLocal Group

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Galaxy

• A giant structure that contains hundreds of
  billions of stars bound together by gravity.

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Types of Galaxies

• Galaxies are classified by their shape.
• Edwin Hubble astronomer named for the Hubble
  Telescope created a galaxy classification system
• The classification system is still used today.
• 3 Types of Galaxies
• A. Spiral
• B. Elliptical
• C. Irregular

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Spiral Galaxy

• A galaxy whose arms curve outward in a pinwheel
  pattern. Contains solar systems and nebulae
• (gas, new stars, and dust).
• Our Galaxy MILKY WAY

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Spiral Galaxy
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Elliptical Galaxy

• A galaxy shaped like a flattened ball, containing
  only old stars, with bright centers and very
  little dust/gas
• Example M87 galaxy

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Elliptical Galaxies
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Irregular Galaxy

• A galaxy that does not have a regular shape.
  They do not fit in another class.
• Example The Large Magellanic Cloud

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Irregular Galaxy
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Solar System

• Our star (Sun), the planets, many moons, and
  other small bodies that ALL travel around the Sun
  (Heliocentric Theory)

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Solar System
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