Instead, they circle around Polaris, the North Star. These are the circumpolar constellations. The reason why these constellations behave differently from the others has to do with their position in the sky with respect to the Earth's axis. Those constellations near Polaris are high enough in the sky that they never go below the horizon. By using Voyager to observe some circumpolar constellations, you can see that the stars rotate counterclockwise around Polaris.
Astronomy is a science, while astrology has no scientific basis.
However, many people are interested in it, so we will explore one aspect of astrology in this lab. Although today the Earth's axis points approximately towards Polaris, this was not always so. Astrology's association between constellations and birthdates was established a long time ago. In the interim the Earth's axis has precessed sufficiently for the Sun to appear to have moved into the neighboring constellation. Therefore, to get the correct correspondence between the date you were born and the constellation that the Sun was in, we have to go back in time 3000 years.