New Clues as to Why Dwarf Planet Ceres Has Few Craters

When the Dawn spacecraft reached the dwarf planet Ceres in March of 2015 researchers were baffled by the lack of large impact craters, but new research may provide some answers. Writing in the journal Nature Communications, researchers say the dwarf planet likely “experienced significant geological evolution, possibly erasing the large basins.” In fact, none of the crater basins are more than 285 kilometers across, but it’s almost certain the planet was struck by large objects over the...

© La Voix de l'Amérique - mardi 26 juillet 2016