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Original file (SVG file, nominally 1,600 × 1,600 pixels, file size: 2 KB) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. The National Space Science Data Center (NSSDC) site has been known to host copyrighted content. Its photo gallery FAQ states that all of the images in the photo gallery are in the public domain "Unless otherwise noted."
Earth axial precession: Image title: The precession of Earth's axis as viewed from the north, drawn by CMG Lee. The seasons indicated pertain to the Northern Hemisphere and are reversed for the Southern Hemisphere. The tilt of Earth's axis and the eccentricity of its orbit are exaggerated. Width: 100%: Height: 100%
Earth's rotation imaged by Deep Space Climate Observatory, showing tilt. Earth's rotation or Earth's spin is the rotation of planet Earth around its own axis, as well as changes in the orientation of the rotation axis in space. Earth rotates eastward, in prograde motion. As viewed from the northern polar star Polaris, Earth turns counterclockwise.
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Open Clip Art Library logo This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication . The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the ...
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The spheroidal shape of the Earth is the result of the interplay between gravity and centrifugal force caused by the Earth's rotation about its axis. [18] [19] In his Principia, Newton proposed the equilibrium shape of a homogeneous rotating Earth was a rotational ellipsoid with a flattening f given by 1/230.