This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Axialtilt. Axial Tilt of Earth svg en en The celestial sphere celestial equator celestial poles ecliptic From Nasa gov PDUSGov date username edit summary January en User Nathanael BarAur no The celestial sphere celestial equator celestial poles ecliptic From Nasa gov Original upload log Legend cur this is the current file