Earth is as far away from the sun as it ever gets. So why is it so hot?
10 months ago
- #astronomy
- #earth-science
- #seasons
- Earth reaches its farthest point from the sun (aphelion) in early July, about 3 million miles farther than its closest point (perihelion).
- Seasonal temperature changes are primarily caused by Earth's 23.5-degree tilt, not its distance from the sun.
- The Northern Hemisphere experiences summer in July because it is tilted toward the sun, receiving more direct sunlight.
- Earth's slightly oval-shaped orbit has a minor impact on seasonal changes compared to its axial tilt.
- Solar energy varies significantly by latitude, with cities at 30°N seeing more than double the energy in summer vs. winter, and those at 40°N experiencing nearly a 300% increase.
- The 7% drop in solar energy due to Earth's distance from the sun is negligible compared to the effects of its tilt.