Craters with bright material on dwarf planet Ceres shine in new images from NASA’s Dawn mission taken from its lowest-altitude mapping orbit. Young crater Haulani (diameter 21 miles) and 6-mile-wide Oxo Crater — the second-brightest feature on Ceres — provide scientists with insight into the dwarf planet’s materials and surface morphology.
Scientists have long been puzzled about what makes Mercury’s surface so dark. The innermost planet reflects much less sunlight than the Moon, a body on which surface darkness is controlled by the abundance of iron-rich minerals. These are known to be rare at Mercury’s surface, so what is the “darkening agent” there?
In September, the New Horizons team released a stunning but incomplete image of Pluto’s crescent. Thanks to updated processing work by the science team, New Horizons is releasing the entire, breathtaking image of Pluto. The team also released images showing extended mapping of the dwarf planet’s “heart” feature and young craters on Pluto’s largest moon, Charon.