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200 Central Park West, New York, NY 10024, USA
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The Heilbrunn Cosmic Pathway is an interactive exhibit designed by the AMNH Exhibitions Lab at the American Museum of Natural History's Rose Center for Earth and Space. Once visitors exit the interior of the Hayden Planetarium, they stand at the beginning of the Cosmic Pathway, a timetable spanning the length of the ramp, that spirals down around the Hayden sphere. The ramp is 360 feet (110 m) long, illustrating 13 billion years of cosmic history. This works out to 36,111,111 years per foot. A typical adult walking step length of approximately 28 inches (71 cm) covers about 84 million years.
