The constellations are not fixed in cosmic terms

When projected onto the sky, stars appear fixed, so ancient observers mentally connected them into patterns and shapes. These patterns are known as the constellations. But, in reality, these stars are nowhere near each other in cosmic terms. This animation shows how the shapes of the constellations might change if observed from other points in space.  

This animation was originally produced for an ESO Chasing Starlight episode on astronomy myth busting.