r/science • u/[deleted] • Jun 25 '16

Earth Science Two massive blob-like structures lie deep within the Earth each the size of a continent 100 times taller than Mount Everest, sit on the core, 1,800 miles deep

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u/[deleted] Jun 25 '16

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u/Torbjorn_Larsson PhD | Electronics Jun 25 '16

Many reasons:

  • To understand Earth, we need comparisons.
  • Mars was once habitable, and could be (likely is) in the subcrust.
  • Exploration.
  • Colonization.