Quote:
Originally Posted by Turtle
The picture says it all for me; except of course which pole leads still.  |
I think that 90 degrees longitude (l=90) in the galactic coordinate system is the direction of galactic rotation. The constellation Cygnus resides there. Toward Cygnus would then be the direction of galactic rotation from our point of view. As Cygnus
resides in our northern earthly hemisphere (and by extension, the solar northern hemisphere), I believe the north pole of the earth and sun should lead our motion of galactic rotation.
A person sitting on the north pole of the earth would be able to see where the solar system is heading (toward the direction of Cygnus), while a person sitting on the south pole could not.
Rotation image 1
Rotation image 2
Quote:
Galactic longitude is measured in degrees as well from 0° to 360° originating in the direction of the axial center of the Milky Way in the constellation Sagittarius. Traveling around the galactic equator we find Cygnus at 90°,
Galactic Coordinate System
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