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Maria on the Moon

  • Oceanus ProcellarumOceanus Procellarum stretches more than 2,500 kilometers across its north, south axis. It covers roughly 4 million square kilometers of the Moon's surface.
  • Mare TranquillitatisThe Moon's Mare Tranquillitatis holds basalt formed during the Upper Imbrian epoch. This rock type dates to an intermediate to young age group within that…
  • Lunar mareNeolithic stones in Ireland hold the earliest known drawings of the Moon surface. These carvings predate written history by thousands of years.