With a claim like that, you'd better name names. They may have credentials, but are those credentials in astronomy? Without knowing who is making these claims, and (far more importantly) what evidence they have, the claims are worthless.

And please don't go bringing up 9/11. There were so many threads about it in the Conspiracy Theories that the mods had to clamp down and restrict that section to astronomy-based conspiracy theories.

Finally, your search difficulty probably stems from the fact that there is no "plane of the ecliptic of the galaxy." The plane of the ecliptic and the plane of the galaxy are two very different things. The plane of the ecliptic is roughly the plane that contains the orbit of the Earth (or the path of the Sun against the stars as seen from Earth). It is strictly a solar-system-local item. The central plane of the galaxy is just that, and pretty much runs through the center of the Milky Way as seen in our skies.

Terms to research: Ecliptic, celestial equator, solstice.

Fred

__________________
"For shame, gentlemen, pack your evidence a little better against another time."
-- John Dryden, "The Vindication of The Duke of Guise" 1684