The ecliptic is the inclination of Earth's equator with respect to the Earth's rotational axis. The angle between Galactic Plane and the Ecliptic is called the ecliptic inclined angle, which is 62.6 degrees from the galactic plane. Galactic plane could be identified as the plane perpendicular to the galactic axis of rotation, and with half the mass of the galaxy above the plane and half below the plane.

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The Sun oscillates up and down relative to the galactic plane with a period of about 90 million years, making about 2.7 oscillations during one orbital period.

The Sun oscillates up and down relative to the galactic plane with a period of about 90 million years, making about 2.7 oscillations during one orbital period.