The ecliptic is an extension of the plane of the Earth’s orbit into the sky. As Earth orbits the sun, it appears to move to the left (east) across the zodiac constellations as viewed from the northern hemisphere. We can’t see the constellation the sun is in — or those nearby — because of its glare. (Stellarium with additions by Bob King)
There's no escape! How the entire sky is bound up in Earth's ceaseless movement. Read more at astrobob.areavoices.com.