scienceisbeauty: The densities of dark energy and dark matter determine whether we live in a flat (k=0), closed (k=+1) or open (k=-1) universe. Credit: J.M. Overduin & P.S. Wesson, Dark Sky, Dark Matter (Institute of Physics Press, 2003) Source: James Overduin’s Web Page, Towson University

scienceisbeauty:

The densities of dark energy and dark matter determine whether we live in a flat (k=0), closed (k=+1) or open (k=-1) universe.

Credit: J.M. Overduin & P.S. Wesson, Dark Sky, Dark Matter (Institute of Physics Press, 2003)

Source: James Overduin’s Web Page, Towson University