From deep space to the brain‘s inner recesses, World Science Festival 2015 turned Washington Square Park into an outdoor lab celebrating the fascinating science that shapes our lives. It was a full day of hands-on activities, interactive experiments, installations, and demonstrations. Guests met scientists and astronauts and enjoyed live performances. Kids got to run through our Mars rover obstacle course, learn how scientists search for life on other planets, and suit up and train like an astronaut while suspended in the air.