The researchers' calculations place the dust in a ring 2.5 astronomical units from Zeta Lep.

ECONOMIST: Planetary formation

The more easily visible outlier in Saturn's famous bands of ice and dust is its E-ring, which encompasses the orbit of the moon Enceladus.

BBC: New ring detected around Saturn

But you are not trying to fill a three-ring binder that will only catch dust.

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The infra-red radiation emitted by the dust can also be used to measure the size of the ring directly, and this has been done using the Keck telescope on Mauna Kea, Hawaii.

ECONOMIST: Planetary formation