Summary:
- Scientists have discovered mysterious structures deep beneath the Pacific Ocean floor that could provide new insights into the Earth's history and formation.
- These structures, called "ultra-low velocity zones," are areas where seismic waves travel much slower than in the surrounding regions, indicating the presence of dense, unusual materials.
- The findings suggest that these zones may be remnants of ancient tectonic plates or even the core-mantle boundary, which could help scientists better understand the processes that have shaped the Earth over billions of years.