The crew of the space shuttle Endeavor includes a Wharton alum.  Garrett Reisman was a 1991 Wharton undergrad with a dual degree in engineering.  He is a flight engineer on the shuttle that's currently in space, and he will actually remain at the international space station for several months - returning to the earth with the next shuttle mission planned for June.  Below are a two links about him and the current mission.

http://www.nasa.gov/mission_pages/shuttle/main/index.html

http://www.jsc.nasa.gov/Bios/htmlbios/reisman.html