What name do astronamers give to the wobbling of the earth on its axis?

Answer 1

The precession of the Equinox. This precession moves the equinox through zodiac constellations. We are now in the Pisces constellation and we will move into the Age of Aquarius in the year 2100, 89 years form now.

Answer 2

"Wobble" isn't a very precise term.

The Earth has a small, short period "wobble" simply due to the fact that it isn't perfectly symmetrical and balanced.

This also causes a small, longer period "wobble" due to the effect of the Moon's gravity on the (slightly asymmetric) Earth.

And there are wobbles due to other (and to me unknown) causes.

But I suspect what you're talking about is what's technically called precession, which has a special name because it's a very particular type of "wobble". The Earth precesses on its axis in a cycle lasting about 29,000 years. Because of this, Summer 15,000 years ago ... or 15,000 years from now... would have occurred in the northern hemisphere in December rather than June.

Answer 3

The gradual change of the direction of Earth's axis - often compared to the wobble of a spinning top - is called precession. It is caused by gravitation from the Moon and Sun, combined with the fact that Earth is not a perfect sphere. The weird part is that, due to the spinning of the Earth, if any force is exerted to straighten up the Earth's axis, it changes direction, instead, at a right angle to that force. Same as in a spinning top.

The gradual change of the direction of Earth's axis - often compared to the wobble of a spinning top - is called precession. It is caused by gravitation from the Moon and Sun, combined with the fact that Earth is not a perfect sphere. The weird part is that, due to the spinning of the Earth, if any force is exerted to straighten up the Earth's axis, it changes direction, instead, at a right angle to that force. Same as in a spinning top.

The gradual change of the direction of Earth's axis - often compared to the wobble of a spinning top - is called precession. It is caused by gravitation from the Moon and Sun, combined with the fact that Earth is not a perfect sphere. The weird part is that, due to the spinning of the Earth, if any force is exerted to straighten up the Earth's axis, it changes direction, instead, at a right angle to that force. Same as in a spinning top.

The gradual change of the direction of Earth's axis - often compared to the wobble of a spinning top - is called precession. It is caused by gravitation from the Moon and Sun, combined with the fact that Earth is not a perfect sphere. The weird part is that, due to the spinning of the Earth, if any force is exerted to straighten up the Earth's axis, it changes direction, instead, at a right angle to that force. Same as in a spinning top.

Answer 4

The gradual change of the direction of Earth's axis - often compared to the wobble of a spinning top - is called precession. It is caused by gravitation from the Moon and Sun, combined with the fact that Earth is not a perfect sphere. The weird part is that, due to the spinning of the Earth, if any force is exerted to straighten up the Earth's axis, it changes direction, instead, at a right angle to that force. Same as in a spinning top.

Answer 5

Precession is the term that refers to the axial shift of a rotating body. It's called the precession of equinoxes. One of the three Milankovitch cycles.

Answer 6

Astronomers call the wobbling of the Earth on its axis "precession." This motion is caused by gravitational forces from the Sun and the Moon acting on the Earth's equatorial bulge.