Physical Geography
2 Topics
The Earth’s Interior: Crust, mantle, P&S waves, discontinuities
Last Updated: January 8, 2026Journey to the Center of the Earth: The Mystery Beneath Our Feet Imagine you have a shovel and an infinite amount of energy. You decide to dig a hole right through the Earth to see what is on the other side. How far would you get? In reality, the deepest...
The Universe: Big Bang Theory, Stars and Planet formation and the Solar System
Last Updated: January 8, 2026Part I: The Cosmic Ballet – From a Tiny Point to the Blue Planet Imagine a time when time itself did not exist. There was no space, no matter, and no light. Everything that we see today—the mountains, the oceans, the sun, and the distant stars—was squeezed into a single...