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A Galaxy: Characteristics, Contents and Types Galaxies are huge and contain billions of stars. ... The Milky Way galaxy, which is a representative of a spiral galaxy, is basically lens-shaped. ... In the Milky Way galaxy, as in all spiral galaxies, there are two star populations. ... These stars are in the center of our galaxy. ... These galaxies can be up to two or three times larger than the Milky Way Galaxy. ... Irregular Galaxies come in many shapes and are usually smaller than the Milky Way Galaxy. ... First, one must measure the total range of radiation given off by the galaxy. ... Also, about 90% of the mass of a galaxy is dark matter.
Approximate Word count = 537 Approximate Pages = 2.1 (250 words per page double spaced)
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