Before we dismiss "Packer Fans from Outer Space" as the goofy title of a silly musical, we must consider this. In the spring of 1952, the superintendent of Door County's Peninsula State Park spotted a strange object hovering in the sky. Fifty years later, "Packer Fans from Outer Space" debuted on the American Folklore Theatre outdoor stage in Peninsula State Park. A fresh production, containing two new songs, opens June 8 in Vogel Hall at the Marcus Center.