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algol13
2 years ago
12

What is a galaxy? Describe three different shapes that a galaxy may have. List the common components of a galaxy.

Biology
1 answer:
Eva8 [605]2 years ago
4 0
A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter. The word galaxy is derived from the Greek galaxias, literally "milky", a reference to the Milky Way.


Elliptical: These have a faint, rounded shape, but they're devoid of gas and dust, with no visible bright stars or spiral patterns. ...
Spiral: The Milky Way is one of the larger spiral galaxies. ...
Irregular: These are small, faint galaxies with large clouds of gas and dust, but no spiral arms or bright centers.
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