“All observational claims made about the object are made in some perspective or other. Before the seventeenth century, the Milky Way, as part of a commonsense perspective on the world, was perceived using human eyes simply as a broad band of light extending across the night sky. From the perspective of Galileo's roughly thirty power telescopes, it was perceived as being made up of a very large number of individual stars. But this was a change in perspective, not a move from a mere perspective to objectivist truth.”