Lunar eclipse peaks tonight over Chicago skies; NASA is beaming up a space telescope

A near-total lunar eclipse will peak tonight, and it may be a while before we get another chance to see one like it.  In the Loop finds out when, where and how to view the celestial event. Plus, we get the inside scoop on a major NASA launch this weekend. GUEST: Michelle Nichols, director of public observing at the Adler Planetarium