Eta

Its story

Eta Muscae is an eclipsing binary in the small southern Fly: every 2.4 days its two components pass in front of each other and the combined light blinks. It belongs to the Lower Centaurus-Crux subgroup of the Sco OB2 association, a young river of blue stars sharing origin and motion through the Galaxy. At nearly 383 light-years, it drifts within the loveliest current of the southern sky.