geosciences

  • Scientists Discovered A Mind-Boggling Chasm On Mercury

    Scientists Discovered A Mind-Boggling Chasm On Mercury

    Placed on Earth, it would stretch from Washington DC to New York to Denver. Larger than the Grand Canyon, wider and deeper than East Africa’s Great Rift Valley, Mercury’s newly-discovered “Great Valley” boggles the imagination. But it’s more than size that makes this geologic feature remarkable. The Great Valley may be our best evidence that…