By what angle is the ecliptic tilted relative to the celestial equator?
Answer
Around 23.5circ
The ecliptic is tilted relative to the celestial equator, which is the projection of Earth's equator onto the sky, by an angle currently around $23.5^circ$. This inclination is known as the axial tilt.

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The Ecliptic: Crash Course Kids #37.2 - YouTube
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