File:Earth precession.svg

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Earth_precession.svg‎ (SVG file, nominally 670 × 764 pixels, file size: 44 KB)

[edit] Summary

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.
Date

5 May 2008(2008-05-05)
Source

Vectorized by Mysid in Inkscape after NASA image http://earthobservatory.nasa.gov/IOTD/view.php?id=541.
Author

NASA, Mysid
Permission
(Reusing this image)

See below.

[edit] Licensing

Public domain 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". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)

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File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current08:43, 2 August 2009Thumbnail for version as of 08:43, 2 August 2009670×764 (44 KB)Mysid (Talk | contribs) (precession movement is CCW, not clockwise)
22:01, 4 May 2008Thumbnail for version as of 22:01, 4 May 2008670×764 (64 KB)Mysid (Talk | contribs) (==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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