University of North Dakota graduate Karen Nyberg is returning to space.

University of North Dakota graduate Karen Nyberg is returning to space.

Nyberg traveled to the International Space Station aboard a space shuttle in 2008. This May, she's going back, joining astronauts from Italy and Russia for a launch in Kazakhstan.

The Minnesota native and 1994 UND graduate says the resilience she's developed by running marathons will ease tough nights during the six-month mission.