If the Earth goes around the Sun, why is the ecliptic not lined up with the celestial equator?

Question

Quizplus · Accepted Answer

The Earth's axis is tilted by about 23 degrees from the vertical, which causes the ecliptic (the apparent path of the Sun through the sky) to be at an angle to the celestial equator (the imaginary circle on the celestial sphere that is equidistant from the poles and perpendicular to the axis of rotation). As the Earth orbits the Sun, this tilt causes the seasons and the changing position of the Sun in the sky.

If the Earth Goes Around the Sun, Why Is the Ecliptic