The immediate, intuitive assumption is that Earth’s distance from the Sun dictates our seasons. If we are closest in January, logic suggests it should be sweltering summer across the entire globe. Yet, for those living in North America, Europe, and much of Asia, January is the heart of winter. This paradox lies at the heart of understanding perihelion: the seasons are not a product of distance, but of tilt.
What happens when Earth receives that extra 3.3% of solar energy? The immediate effect is subtle but global. During perihelion, the Sun appears slightly larger in our sky—about 3% larger than during aphelion. You would never notice this with the naked eye, but it’s a precise, predictable reality. More significantly, the total solar irradiance (the amount of the Sun’s energy reaching the top of Earth’s atmosphere) increases by about 6.9%. sun closest to earth
The Southern Hemisphere is tilted toward the Sun during perihelion, which often results in slightly more intense summer heat compared to Northern summers. Impact on Earth’s Orbit and Speed This paradox lies at the heart of understanding