Scientists led by Dr Felipe Braga-Ribas from Observatório Nacional/MCTI in Rio de Janeiro, Brazil, have observed for the first time a minor planet with dense and narrow rings. This is an artist’s impression of the asteroid Chariklo. Image credit: University of Copenhagen. The object, called Chariklo, is the largest member of a class known as the Centaurs. It is 250-km in diameter and located between Saturn and Uranus about 2 billion km away. It...
