Why doesn the Milky Way galaxy circle the sky along the celestial equator or along the ecliptic?
We are smaller than a speck relative to the galaxy itself. Not every planetary system in the galaxy is oriented in the same way. The Milky Way appears as it does because of the inclination of earth’s equatorial plane (celestial equator) to the galactic plane. We are near the galactic plane, but it would be stranger than strange if every planet in the galaxy had its equatorial plane or ecliptic right on the galactic plane.
