Earth is a little **tilted**, like a spinning top leaning to one side. ```text N β†— N β†— / / (🌍) β˜€οΈ SUN (🌍) / / Northern summer Northern winter ``` Earth travels around the Sun once a year. Its tilt keeps pointing the same way: - **Summer:** The northern half of Earth leans toward the Sun. Sunlight hits it more directly, and the days are longer. - **Winter:** The northern half leans away from the Sun. Sunlight comes in at more of a slant, and the days are shorter. The southern half has the **opposite seasons**: when it’s summer in the north, it’s winter in the south. πŸ”¦ You can try this with a flashlight: shine it straight at your hand, then tilt your hand. The tilted light spreads out more, so it warms any one spot less.