When J1407 was discovered in 2012, it seemed like a fairly run-of-the-mill star. But the researchers who spotted it saw signs of a strange eclipse -- a period when the star had dimmed and re-brightened. These sudden, drastic brightness changes went on for two months.
According to analysis published in Astrophysical Journal, a ringed planet like Saturn is in the star's system. But unlike Saturn, this ringed planet is a real bruiser. Its rings are massive and opaque enough to occasionally block out the star's light.