The ground may feel steady underfoot, but the planet is always in motion. While satellites and sensors have mapped the surface in fine detail, what lies beneath remains largely unknown. The crust, a shell only 35 kilometers thick, is the farthest any probe has reached. To explore the deep interior—where the mantle and core reside—scientists must depend on indirect tools …
Read More »Scientists solve the 75-year-old mystery of massive ‘gravity hole’ in the Indian Ocean
