This video is great when talking about the orbit of the Earth and the rotation that makes up one day. Also how the sun is part of that day length.

Day On Earth. A nychthemeron or a day on earth is a deceivingly simple concept. Today we will examine that day on earth in detail. Perhaps uncovering a few surprises.

Axial Tilt Cross Stitch Pattern by SarcasticStitches

Spread some rational and scientifically valid holiday cheer with this festive greeting! Chart Size: 65 Stitches high x 91 Stitches wide

Axial tilt - Wikipedia, the free encyclopedia

Axial tilt - Wikipedia, the free encyclopedia

Long-term changes in Earth’s axial tilt, or obliquity, is just one factor affecting how much sunlight strikes Earth’s Northern Hemisphere, which influences the coming and going of ice ages. Every 41,000 years or so, Earth’s obliquity ranges from 22.1° to 24.5° and then back again.

Long-term changes in Earth’s axial tilt, or obliquity, is just one factor affecting how much sunlight strikes Earth’s Northern Hemisphere, which influences the coming and going of ice ages.

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