The Salty Truth About Ceres’ Mysterious Bright Spots

Earlier this year, images of two bright spots captured by NASA’s Dawn spacecraft on the dwarf planet Ceres sent scientists and theory-happy Internet commentators into a frenzy.

While most hypotheses suggested that the spots were the result of ice or metallic minerals on the surface, the possibility of them being alien cities  was equally irresistible to some.

However, a study published Wednesday in the journal Nature indicates that Ceres’ spots are likely caused by hydrated magnesium s

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