Antarctica’s blue-ice conveyor turns space rocks into Earth’s largest meteorite archive
Antarctica’s blue-ice fields act as a natural sorting conveyor: flowing ice, mountains, and dry katabatic winds concentrate meteorites on vast ice surfaces, creating the world’s largest meteorite collection (more than 45,000 specimens, nearing 50,000 in total). While most rocks come from asteroids, a small fraction are lunar or Martian; programs like ANSMET recover, document, and freeze-store samples for researchers, turning a natural accident into a valuable, wide-ranging low-cost sample library. The hotspot locations depend on ice speed and climate, and the process is not permanent as ice movement can bury or wash away specimens.