Galaxies and the Universe Lesson 4
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Last updated 7:11 PM on 11/7/25
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6 Terms
1
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Galaxies
Huge collections of stars.
2
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Dark matter
Matter that emits no light at any wavelength.
3
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Doppler Shift
The shift to a different wavelength.
4
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Spiral Galaxy
A galaxy shaped like a pinwheel; a large flat disc with arms radiating out.
5
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Elliptical Galaxy
A galaxy shaped like a sphere, egg, or football.
6
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Irregular Galaxy
A galaxy with no definite shape.
Note 
Flashcards (244)