I would like to suggest that the history of science is the history of an enlarging understanding of the universe, its evolution, its history, and its structure. We have engaged the universe at the very limits of our capacity. We have explored the world of the microcosm and the world of the macrocosm. We have found at both extremes incredible complexity. The universe, beginning from an unimaginably hot and dense singularity, evolved through a series of stages, each producing the condition necessary for the succeeding stage. Our sun, our solar system, our planet, our own beings are all late stages of this evolving universe. The insights of cosmology and theoretical astronomy have served to tie us ever more tightly into the emerging story of the universe itself. The history of the universe is our history. We emerged from the same vast processes that created galaxies and suns and stars and planets. We are all of us recycled stardust.

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