Our Earth is structured sort of like an onion – it’s one layer after another. Starting from the top down, there’s the crust, which includes the surface you walk on; then farther down, the mantle, ...

NASA says Earth is about halfway through its lifespan. Scientists explain how solar changes could affect habitability, oceans, and the planet’s future over billions of years ...

Seasonal changes are caused by Earth's 23.5-degree axial tilt, not its distance from the Sun. When a hemisphere leans towards the Sun, it receives direct sunlight and experiences summer, while the ...

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Earth's tilt causes extreme light and dark periods near the poles. Places like Svalbard and Tromsø in Norway, and Utqiaġvik, Alaska, experience weeks of continuous daylight in summer and prolonged ...