“Each impact would have ejected a disk of molten earth that slowly coalesced into a moonlet.”

“At the borderline of our imaging capacity, Puck is a shapeless rocky moonlet circling Uranus very close at a distance of 86.010 km.”

“The Arrow, the Hound and the Lady circled the moonlet, swinging inward to the attack.”

“Both were rocks, the outermost with two moonlets and a small cloud of large asteroids, the innermost with none.”

“The moonlets range from 32 km to just six kilometres in diameter, the team said in the British weekly, Nature.”

“It's unlikely that moonlets this large were formed through gradual buildup of space material.”