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Whose observation first showed that the Milky Way is made of countless stars?
Quick Answer
Galileo Galilei made the breakthrough with his telescope in 1610. He saw that the Milky Way resolves into innumerable stars.
The Full Story
Galileo Galilei used one of the earliest astronomical telescopes to observe the night sky in 1609 and 1610. He reported that the hazy band of the Milky Way was actually composed of a vast number of faint stars. This was a major challenge to older ideas of a smooth celestial substance. His observations helped transform astronomy from naked-eye tradition to telescopic science.
Key Facts
1.Galileo’s observations were published in 1610
2.He used an early telescope
3.The Milky Way was shown to be made of stars
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"The night sky was more crowded than anyone imagined"
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