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Whose work first showed that galaxies come in many forms, not just “spiral nebulae”?
Quick Answer
Edwin Hubble classified galaxies into spirals, ellipticals, and irregulars. His system made galaxies a major field of astronomy.
The Full Story
Edwin Hubble studied nebulae and demonstrated that many are actually separate galaxies outside the Milky Way. He also developed a classification scheme grouping galaxies by shape, including spirals, ellipticals, and irregulars. This helped astronomers compare galaxy types and study how they evolve. Hubble’s work turned galaxies from curiosities into a central topic in extragalactic astronomy.
Key Facts
1.Classification developed in the 1920s–1930s
2.Included spirals and ellipticals
3.Shifted astronomy toward extragalactic studies
YouTube Angle
Suggested video title for this topic:
"How astronomers first sorted the universe’s island cities of stars"
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