This week we explore one of the sky’s most fascinating stars – Mira, the famous long-period variable star in the constellation Cetus. Join EarthSky's Deborah Byrd and Bob King - aka AstroBob - as they explain how Mira “breathes,” expanding and contracting over a 332-day cycle. Most of the year, this star is invisible to the unaided eye. But, near maximum, it pops into view. That's what's happening now. Mira is heading toward its peak. We’ll show you exactly how to find it in the evening sky and