Have you been to the Museum of Science and Industry in Chicago lately?  Now is the perfect time to go.  You can take advantage of free days at the Museum of Science and Industry now through Friday, June 5.  During this time general admission to the museum is free to the public.  Learn about tomorrow's inventions at the Fast Forward - Inventing the Future exhibit.  See the Swiss Jolly Ball, the world's largest pinball machine.  Imerse yourself in fantasy in Coleen Moore's Fairy Castle. Explore space in the Henry Crown Space Center.  Bring the little ones to the Imagination Staion to splash, build and create.  Enjoy these exhibits and more for free at the Museum of Science and Industry.  The hours are 9:30am - 5:30pm Monday thru Saturday.  If you miss out this week there will be another  free day on June 19.  When was the last time you went to the Museum of Science and Industry for free?