How does a change in the Earths tilt result in more/less energy received from the sun?
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A clarification on tilt. The tilt does not change, it remains the same throughout the year – which is why the North Star is always above the North Pole.
Relative to the plane of our orbit around the Sun the Earth’s axis is tilted about 23 degrees.
The Earth’s axis of rotation (tilt) does change very slowly over the course of hundreds/thousands of years, that is called precession.
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