In 1750, who proposed that the visible stars were embedded within a vast, flattened, luminous layer?

Answer

Thomas Wright

Thomas Wright first suggested the geometrical model where the stars, including the Sun, resided within a massive, flattened disk structure. He theorized that the perceived thickness varied based on the viewing angle through this structure.

In 1750, who proposed that the visible stars were embedded within a vast, flattened, luminous layer?
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