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SpaceIn the 60's, space exploration was an American obsession. But the growing reality of space has turned the romance to cynicism. We chart the path from then to now. We begin with Ann Druyan, widow of Carl Sagan, with a story about the Voyager expedition, true love, and golden record that travels through space. For a dose of reality, astrophysicist Neil de Grasse Tyson explains the Copernican Principle and just how insignificant we are.

Listen to or learn more about this week's episode of Radiolab.