It's not just Saturn and the giant gas planets of the solar system that bear rings. For the first time, rings have been found around an asteroid.
The asteroid, known as 10199 Chariklo, is more than a billion kilometres from Earth, circling the sun in an orbit between Saturn and Uranus.
On June 3 last year, astronomers at seven different locations in Chile, Brazil, Uruguay and Argentina were standing by to observe the asteroid as it passed in front of star, relative to the telescopes’ lines of sight.
They hoped the dips in starlight, caused by the asteroid passing in front of the star, would reveal details of the 248km asteroid’s size and shape.
They ended up with much more.