Compare and contrast size, composition, structure, and history of at least 2 specific galaxies. Describe how characteristics of these galaxies contributed to the Hubble sequence.

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The Andromeda galaxy is Sb in the Hubble sequence; the Milky Way galaxy is SBbc.

The selected galaxy	Size	Composition	Structure	History
Galaxy Milky Way	Diameter: 30,000 pc; Thickness: 1000 light years.	Contains stars, constellations, gas and dust.	Spiral-shaped, with a black hole in the middle.	In the 18th century, William Hershel discovered the Milky Way.
Andromeda galaxy	Length: 220,000 light-years.	Includes 1 trillion stars.	Spiral-shaped, with a black hole in the middle.	Simon Marius made the first description of the object in 1612.

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Academic.Tips. (2022) 'Compare and contrast size, composition, structure, and history of at least 2 specific galaxies. Describe how characteristics of these galaxies contributed to the Hubble sequence'. 8 October.

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Academic.Tips. 2022. "Compare and contrast size, composition, structure, and history of at least 2 specific galaxies. Describe how characteristics of these galaxies contributed to the Hubble sequence." October 8, 2022. https://academic.tips/question/compare-and-contrast-size-composition-structure-and-history-of-at-least-2-specific-galaxies-describe-how-characteristics-of-these-galaxies-contributed-to-the-hubble-sequence/.

1. Academic.Tips. "Compare and contrast size, composition, structure, and history of at least 2 specific galaxies. Describe how characteristics of these galaxies contributed to the Hubble sequence." October 8, 2022. https://academic.tips/question/compare-and-contrast-size-composition-structure-and-history-of-at-least-2-specific-galaxies-describe-how-characteristics-of-these-galaxies-contributed-to-the-hubble-sequence/.

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