From the farthest edge of the observable universe to the tiniest measurement of the subatomic realm, reality as we experience it is defined by scale. Astrobiologist Caleb Scharf leads a tour through the scale of the universe, and explains how scientists use what we know about scale as an entry point to asking what we don’t know about the nature of reality both here on our earth and out in the cosmos. For a full transcript of this podcast visit: https://www.amnh.org/explore/news-blogs/podcasts/frontiers-lecture-the-zoomable-universe-with-caleb-scharf This Frontiers Lecture took place at the Museum on November 13, 2017. For information on upcoming events at the museum, including future Frontiers Lectures, visit AMNH.org/calendar Support for Hayden Planetarium Programs is provided by the Schaffner Family and the Horace W. Goldsmith Endowment Fund.