Discovery Cube of Santa Ana is holding its annual Pumpkin Launch at Cal State Fullerton on November 4 from 10 am to 2 pm. . Visit this event to witness teams compete to see who can launch a pumpkin at targets using giant trebuchets and other devices. It is a free event but registration is required. Be sure to bring something to sit on. The kids will also be able to participate in hands-on activities throughout the day. You can also enter your carved pumpkin into the pumpkin carving contest. For more information, click here.