H. Taylor
What is a galaxy?
A galaxy is a massive, gravitationally bound system consisting
of stars, stellar remnants, an interstell...
How many are there?
Estimated that there are 170 billion different galaxies
Space in between galaxies is known as “interga...
Type and Classification
There are 3 main types of galaxies, though subtypes are not uncommon
1.

Spiral galaxies

2.

Elli...
Spiral galaxies
3 main components
1.

Bulge

2.

Disk

3.

Halo
Elliptical galaxies
Shaped like an elongated sphere
Sometimes look almost football shaped

Classified based on elongation ...
Irregular galaxies
Have no set structure
Divided into two groups:
1.

Irr I

2.

Irr II
Works Cited
http://ircamera.as.arizona.edu/NatSci102/NatSci102/lectures/galaxytypes.htm
http://ircamera.as.arizona.edu/Nat...
Types of galaxies
Types of galaxies
Types of galaxies
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Types of galaxies

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Types of galaxies

  1. 1. H. Taylor
  2. 2. What is a galaxy? A galaxy is a massive, gravitationally bound system consisting of stars, stellar remnants, an interstellar medium of gas and dust, and dark matter
  3. 3. How many are there? Estimated that there are 170 billion different galaxies Space in between galaxies is known as “intergalactic space”
  4. 4. Type and Classification There are 3 main types of galaxies, though subtypes are not uncommon 1. Spiral galaxies 2. Elliptical galaxies 3. Irregular galaxies
  5. 5. Spiral galaxies 3 main components 1. Bulge 2. Disk 3. Halo
  6. 6. Elliptical galaxies Shaped like an elongated sphere Sometimes look almost football shaped Classified based on elongation from a perfect circle • Scale from E0 to E7
  7. 7. Irregular galaxies Have no set structure Divided into two groups: 1. Irr I 2. Irr II
  8. 8. Works Cited http://ircamera.as.arizona.edu/NatSci102/NatSci102/lectures/galaxytypes.htm http://ircamera.as.arizona.edu/NatSci102/NatSci102/text/spiraltypes.htm http://www.astro.cornell.edu/academics/courses/astro201/galaxies/types.htm http://www.dailymail.co.uk/sciencetech/article-2016050/Incredible-images-taken-amateur-astronomer-Georgiy-Suturin-usingcamera-home-telescope.html http://en.wikipedia.org/wiki/Galaxy http://www.bobthealien.co.uk/galdiff.htm http://www.spacetelescope.org/images/opo9941a/ http://www.microcosmologist.com/blog/wp-content/uploads/2012/07/Mass-Effect-3-Galaxy-mass-relays-exploding.jpg http://www.dailygalaxy.com/my_weblog/2011/03/new-discovery-evolution-of-the-most-massive-galaxies-in-the-universe.html http://galaxiez.weebly.com/types-of-galaxies.html http://abyss.uoregon.edu/~js/ast123/lectures/lec11.html http://annesastronomynews.com/photo-gallery-ii/galaxies-clusters/the-bird-eso-593-ig-008-is-a-triple-merger-of-galaxiescomposed-of-one-barred-spiral-one-more-irregular-and-a-third-the-head-irregular-galaxy-that-seems-to-be-forming-stars-at-afrantic-rate-65/ http://kids.britannica.com/comptons/art-90852/The-Cigar-galaxy-is-classified-as-an-irregular-galaxy http://pmhsscience9110.wikispaces.com/Galaxies http://spore.wikia.com/wiki/File:Spiral-galaxy-wallpaper.jpg
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