Hundreds of ping-pong balls blast into the air after being projected out of a trash can by liquid nitrogen during UNO’s second annual Space Day Tuesday, November 17, 2015. The day, dedicated to space, science and math, was put together for the first time last year by the University of New Orleans College of Sciences and College of Engineering, The Boeing Company, NASA and the National Center for Advanced Manufacturing (NCAM) Approximately 170 7th and 8th graders from St. Augustine, Archbishop Rummel, Mount Carmel, Hynes, Holy Cross and Eleanor McMain took part.