How big would the Mily Way be if Earth was the Size of a Golf Ball?
This is no guess. A golf ball is about 3 billionths the size of the earth. Reducing the Milky Way down from 100,000 light years in diameter by 3 billionths makes it 1.764 billion miles in diameter. The reduced Milky Way would fit snugly inside Saturn’s orbit. In other words the Milky Way would be about half the size of our solar system.
