Planets in formation and the equinox

Fall officially starts with the autumnal equinox on Sept. 22, when Earth’s axis is “perpendicular” to the sun, not tilted toward or away from it. The Earth’s tilt doesn’t change, it’s always 23.4° in relation to the plane of its orbit—in other words, Earth goes around the sun “leaning” one way, not upright on its […]

Planets in formation and the equinox Read More »