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NASA's Dawn spacecraft has provided an even closer look at the bright spots on the surface of the dwarf planet Ceres — but the origins of the spots are still subject to debate.
The latest view, released Wednesday, shows the flashes of sunlight reflected by the spots inside a 57-mile-wide (90-kilometer-wide) crater as Dawn flew within 4,500 miles (7,200 kilometers) of Ceres on May 16. There's one big spot with a smattering of smaller spots off to the right. The picture also shows that Ceres' surface is covered with scads of craters and channels …. http://www.nbcnews.com