Moulding Plane: Cassiopeia

 

 

A moulding plane marked with the changing pattern of the stars (as seen from Earth) that comprise the constellation of Cassiopeia. The blue stars show it looked from our perspective 50 millennia ago, the white stars how it looks now, and the red stars how it will look in 100 millennia, with list of the star's traditional names - Shedir, Caph, Tsih , Ruchbah and Segin - on the rear.