The Greek astronomer Hipparchus is credited with first estimating Earth's precession around 127-146 B.C. He noticed that the position of the stars shifted over time, indicating a slow wobble in Earth's axis.
Procession of the Equinox
I think you are referring to a phenomenon called Nutation.
The Earth is a spinning top (gyro) with a different moment of inertia about the spin axis than the other two axis. Therefore, it acts like a spinning top with both precession and nutation. Precession of the polar axis (relative to a 'fixed' distant star) forms a cone. The precession period (~26,000years) is the time it takes for the cone to be traced. Nutation occurs normal to the precession cone and has a much faster period (~18.6yrs).
The precession of the Earth's axis, known as axial precession or precession of the equinoxes, takes approximately 26,000 years to complete one full cycle. This means that the next completion of this cycle is expected to occur around the year 24,000 AD. However, as precession is a continuous process, it is always ongoing rather than having a specific "next completion" date.
The next precession of the Earth's axis is already in progress and it occurs over a period of about 26,000 years. The exact timing of when one precession cycle ends and another begins is not easily pinpointed.
precession
Procession of the Equinox
precession
Earth's precession
I think you are referring to a phenomenon called Nutation.
The Earth is a spinning top (gyro) with a different moment of inertia about the spin axis than the other two axis. Therefore, it acts like a spinning top with both precession and nutation. Precession of the polar axis (relative to a 'fixed' distant star) forms a cone. The precession period (~26,000years) is the time it takes for the cone to be traced. Nutation occurs normal to the precession cone and has a much faster period (~18.6yrs).
The earths rotation effects whether it is night or day (so you'll see the moon at night).
Due to the earths precession (How the earth 'wobbles' on its axis) the pole star changes over time. Though this takes many, many years
Which Earth cycle are you referring to (there are many). If you want us to answer your questions you must be sure your question is as precise as possible.
The direction of precession of a gyroscope is perpendicular to the axis of rotation.
Precession, which in this case refers to a movement of Earth's axis. A full "turn" takes about 26,000 years.
An ayanamsha is a degree of precession in Vedic astrology.