Rituals come as much from religion as they do from the way Earth tilts on its axis and spins around the Sun.

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Many of humanity's cultural traditions are based upon the movement of our planet around the Sun. The summer and winter solstices and the spring and autumn equinoxes take on special significance.

The reason these special days exist is because our planet tilts at an angle of roughly 23° on its axis. Without this tilt, there would be no seasons.

The religious and philosophical themes of rebirth and resurrection, therefore, are partially the result of our planet's axial tilt.

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About Sasha Sagan:

Sasha Sagan is a native of Ithaca, New York and a graduate of NYU. She has worked as a television producer, filmmaker, writer, and speaker in the U.S. and abroad. Her essays and interviews on death, history, and ritual through a secular lens have appeared in The Cut, O, the Oprah Magazine, Literary Hub, Atmos and beyond. She is a contributing editor for the British fashion magazine Violet Book. Sasha regularly speaks on ways science can inform our celebrations and how we mark the passage of time, inspired in part by the work of her parents, Carl Sagan and Ann Druyan.

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