The Harriet and Robert Heilbrunn Cosmic Pathway, a gently sloping 360-foot walkway that leads visitors on an exploration of 13 billion years of cosmic evolution, winds one and one-half times around the Hayden Sphere in the Rose Center for Earth and Space. The Cosmic Pathway illustrates the development of our universe, using a range of media. At the start of the walkway, children and adults alike can measure the length of their stride and determine how many millions of years pass with each step — an average stride covers 75 million years of cosmic evolution. [More Info]

Photo © D. Finnin/AMNH