Theia's Remains: The Mysterious Blobs Beneath Earth’s Surface
"A Hidden World Under The Earth" Topics Covered: 1 . **Discovery of the Blobs** - Accidental discovery of two continent-sized structures beneath Africa and the Pacific. - Initial studies in seismology that led to the findings. 2. **Scientific Investigation & Theories** - Seismic wave studies and their role in mapping Earth's interior. - Connection between hotspots, mantle plumes, and the blobs. - The role of tectonic activity in shaping Earth's interior. 3. **The Theia Hypothesis** - The theory that the blobs are remnants of Theia, a hypothesized planet. - The Moon-forming collision 4.5 billion years ago. - The blobs’ composition and their alignment with Earth's rotation. 4. **Evidence & Challenges** - Computer simul...