Joshua on Instagram: "Happy Autumn! The autumn equinox begins today, September 22nd, in the northern hemisphere. An equinox is a moment that occurs twice each year when the lengths of day and night are practically equal. For most of the year, the Earth's axis is tilted either toward or away from the sun. That means the sun's warmth and light fall unequally on the northern and southern halves of the planet. During the equinox, the Earth's axis and its orbit line up so that both hemispheres get an

Who, What, Why: What is an equinox?