Previously, scientists thought the moon's Ocean of Storms was a round crater left after a giant impact, but now researchers have found it is underlain by a giant rectangle created by cooling lunar lava as the moon formed. The Ocean of Storms, or Oceanus Procellarum, is the largest of the moon's maria, giant dark spots visible on the near side of the moon. Scientists had previously thought the Ocean of Storms was created by a giant cosmic impact that left a crater about 2,000 miles wide ...
{}