What did turning the telescope toward the Milky Way imply about the universe's scale?

Answer

The universe was vastly larger and more populated than conceived.

When Galileo observed countless individual stars in the Milky Way, previously invisible, it implied that the universe was vastly larger and more populated with celestial bodies than anyone had previously conceived according to the Ptolemaic spheres.

What did turning the telescope toward the Milky Way imply about the universe's scale?
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