The sky will be putting on a terrific show on Sunday night. There'll be a total lunar eclipse, a phenomenon viewable in our region only about once each year. Unfortunately, the big snow storm headed our way is likely to blot it out, and people in the Rochester area probably won't get to see it. And because of the storm, the staff at RMSC's Strasenburgh Planetarium decided to cancel the planned programming for Sunday night. But planetarium director Steve Fentress tells us what we'll be missing and why it's a cool sight.