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The fascinating bright spots on the surface of the dwarf planet Ceres have come into sharper view.
What were initially thought to be just a couple of brilliant, closely spaced features at one location now turn out to be a clutch of many smaller dots.
The latest pictures were acquired by the US space agency’s Dawn spacecraft on its first full science orbit since arriving at Ceres on 6 March.
The spots were seen from a distance of 13,600km.
Researchers on the mission concede they still have much to learn about the dots’ true nature, but the new data is hardening their ideas.
“Dawn scientists can now conclude that the intense brightness of these spots is due to the reflection of sunlight by highly reflective material on the surface, possibly ice,” said Chris Russell, who is the principal investigator on the mission.
With a diameter of 950km, Ceres is the largest object in the main asteroid belt between Mars and Jupiter.
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