Join us for the Keweenaw Roller Derby's seventh annual Solar System Smackdown mixer! Skaters from all over the midwest will be mixed into teams and will go head-to-head. Just $5 at the door gets you access to an evening of intense roller derby action and fun. Bring your friends, bring a date! Bring your kids and enjoy some fun in the kid's area - children 10 and under have FREE entry. See. You. There!