The missing 500 million: Cosmic bombardment melted Earth's first crust
05/07/2026-13:55 05/07/2026-14:20 מחשבים וטכנולוגיה Ars Technica דיווח
Earth is the only planet we know of with buoyant, silica-rich continents. But, despite decades of research, geologists still don't agree on how they formed. "The continents started appearing around about four billion years ago—that's the oldest conti
