With a cosmic flight simulator, we'll take a scenic journey through space and time. After exploring our local Galactic neighborhood, we'll travel back 13.7 billion years to explore the Big Bang itself and how state-of-the-art measurements and new theoretical insights are transforming our understanding of our cosmic origin and ultimate fate. I then discuss how mapping neutral hydrogen at high redshifts has the potential to dramatically improve the precision of our cosmology, and shed new light on the nature of dark matter, dark energy and the early universe.

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