What is "apex" in astrology?

The solar apex (Apex of the Sun's Way) is the direction that the Sun travels with respect to the Local Standard of Rest. In lay terms, it's the "target" within the Milky Way that the Sun appears to be "chasing" as it orbits the galaxy. It should not be confused with the Sun's "motion" through the Zodiac, which is not a real 3D motion, but a 2D parallax effect due to change in our vantage point (the Earth's revolving around the Sun).

I know Astrology has been around longer than me :) Can't really say how long and as for the chain guy, we should ask him to show proof that Astrology is fake or whatever. He always brings somebody else's arguments but never his own. He probably believes in Astrology more than we think. Why should a disbeliever spend so much time in an area he doesn't believe in ???