What Are Ceres' Bright Spots? Closest Yet, and Experts Still Can't Say

New images from NASA's Dawn spacecraft have brought humanity a mere 2,700 miles above the surface of the protoplanet known as Ceres. Now, for the first time ever, experts are able to see the nooks and crannies of this alien world in stunning detail; and even still, two "bright spots" on its surface remain a mystery.