Image:Earth_precession.svg

Image:Earth precession.svg

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Earth_precession.svg‎ (SVG file, nominally 670 × 764 pixels, file size: 64 KB)

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Description

Description	Precession of rotational axis relative to the direction to the Sun at perihelion and aphelion. This changes the time of the year at which perihelion and aphelion occur.
Source	Vectorized by Mysid in Inkscape after NASA image http://earthobservatory.nasa.gov/Library/Giants/Milankovitch/Images/precession.jpg.
Date	2008-05-05
Author	NASA, Mysid
Permission (Reusing this image)	see below

Licensing

This file is in the public domain because it was created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (NASA copyright policy page or JPL Image Use Policy).

Warnings:

Use of NASA logos, insignia and emblems are restricted per US law 14 CFR 1221.
The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain.
Materials from the Hubble Space Telescope may be copyrighted if they do not explicitly come from the STScI. [1]
All materials created by the SOHO probe are copyrighted and require permission for commercial non-educational use. [2]
Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. [3]

File history

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	Date/Time	User	Dimensions	File size	Comment
current	22:01, 4 May 2008	Mysid	670×764	64 KB	(==Description== {{Information \|Description=Precession of rotational axis relative to the direction to the Sun at perihelion and aphelion. This changes the time of the year at which perihelion and aphelion occur. \|Source=Vectorized by [[w:User:Mysid\|Mysid])

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