Galaxies were originally called "Spiral Nebulae". Their true nature was first appreciated when: a.) The Cosmic Microwave

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Galaxies were originally called "Spiral Nebulae". Their true nature was first appreciated when: a.) The Cosmic Microwave

Post by answerhappygod »

Galaxies were originally called "Spiral Nebulae". Their true
nature was first appreciated when:
a.) The Cosmic Microwave Background was discovered
b.) Newton developed his theory of gravity
c.) Hubble measured the distance to the Andromeda Galaxy
d.) Galileo disproved the Geocentric Model
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