And sure enough, the great tilt kept turning, bringing spring, then summer, then the story all over again. The seasons in the Northern Hemisphere are caused by Earth’s 23.5-degree axial tilt as it orbits the Sun. When the North Pole tilts toward the Sun → summer (direct rays, long days). When it tilts away → winter (indirect rays, short days). Equinoxes (spring/autumn) occur when the tilt is sideways, giving equal day and night.
He picked up a torch to represent the Sun. “Watch closely.” seasons in northern hemisphere
“Elara,” he said, “the secret isn’t how close we are to the Sun. The secret is our tilt .” And sure enough, the great tilt kept turning,
He drew a circle in the dirt. “Imagine Earth is a spinning top. But unlike a straight top, our Earth is leaning—tilted 23.5 degrees. And as we race around the Sun each year, that lean points us in different directions.” When it tilts away → winter (indirect rays, short days)
“In December,” he said, “we face away from the Sun. The sunlight arrives at a low, slanting angle—spreading thin like butter scraped across too much bread. Days are short, nights are long. This is the Winter Solstice—our darkest day.”
