The entire concept of astrology relies on the assumption that the stars are in set formations that orbit the earth.
As anyone would be able to tell you, this is not the case. The stars orbit the galactic core, which is also orbited by our sun, which is in turn orbited by the earth.
The constellations are not set, and only appear that way when viewed from earth. From Mars, the next planet over, they would appear very different, because they are actually thousands of light-years apart.