Tomorrow morning from 5:18am till 6:25am, Chicagoans will glimpse something that hasn't happened in more than 100 years: Venus will travel between Earth and the Sun. We'll only catch the last bit of the transit (best viewing is in the Middle East), but with the right equipment, anyone can watch. The Chicago Astronomical Society will be observing the transit at the Adler Planetarium, but if you can get up that early, all you have to do is head to the lakeshore to get an unimpeded view.