What is the ecliptic relative to the Sun's position?

The apparent path the Sun traces against background stars over a year

The ecliptic is fundamentally defined as the path the Sun appears to traverse when viewed from Earth. While it appears as if the Sun is moving through the constellations, this is an optical illusion caused by the orbital motion of Earth around the Sun. Because our perspective changes as we travel through space, the Sun is projected against different sections of the celestial sphere throughout the course of a year, creating a consistent track known as the ecliptic.