Science Forums 2

[Turtle]

Originally Posted by modest

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

Roger. Now just to check here, because your second diagram is a bit confusing in this regard, the solar system is orbiting the galactic center counter-clockwise, oui/no?

Also, your last link affirms the above-the-galactic-plane assertion we came to here & elsewhere. >> NationMaster - Encyclopedia: Galactic coordinate system

...Our solar system lies 112.7±1.8 light years (34.56±0.56 pc) [1] above the central plane of the Milky Way. ...