Orientation of the galactic, ecliptic and celestial (earth based) astronomical coordinate systems, projected on the celestial sphere, showing the galactic equator (black) and north galactic pole (NGP), the ecliptic (orange) and north ecliptic pole (NEP), and the celestial equator (blue) and north celestial pole (NCP). Sun and earth not shown to scale but to indicate sun's orbital direction around the galactic center and earth's orbital direction around the sun.
<a href="//commons.wikimedia.org/w/index.php?title=User:Macevoy&amp;action=edit&amp;redlink=1" class="new" title="User:Macevoy (page does not exist)">Macevoy</a>
<span class="int-own-work" lang="en">Own work</span>