The international science journal Nature routinely publishes Nature Outlook, a supplemental series in which topics of scientific, clinical, or societal interest are explored in depth. These Outlooks provide a comprehensive picture of the current "state of knowledge" on the selected theme. For instance, this Outlook from September 2016 explores the ever elusive topic of The Dark Universe. As the authors note, "Most of the cosmos is the dark universe, a mix of dark matter and dark energy." Readers have access to seven articles written by science journalists and scholars on the topic, as well as Related Articles and informative Animations. The content here is best suited for readers with a basic understanding of physics; if used as an educational resource, the articles and animations may be most beneficial for college or advanced secondary students. Readers interested in exploring more Nature Outlook topics may select the See all supplements link at the top of the page.