Alittle moonlet too small to be seen from Earth could be shaping the thin rings around the distant minor planet Chariklo. Chariklo A is a centaur – a breed of small body that orbits the Sun on a path sandwiched somewhere between Jupiter and Neptune. Centaurs are thought to come in from the Oort Cloud, which is a vast halo of trillions of frozen cometary bodies that extends possibly a light year from the Sun. Over the course of millions of years, they drift inward, either to be ejected from the Solar System by the gravity
