Dinkinesh, and its surprise mini-moon Selam, might also contain clues about how the planets formed billions of years ago, the study reveals.
Lucy's images show that Dinkinesh, located in the inner edge of the main asteroid belt between Mars and Jupiter, has a trough and a ridge, and is shaped like a spinning top.
The researchers think the ridge formed when a large chunk of rock dislodged from Dinkinesh, broke into tiny pieces, and settled to form the ridge.
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