Planetary Transit Reveals Surprising 3rd Planet in a Bright Nearby Star System The surprising transit revealed exciting details about a rare planet “with no known equivalent”. The CHEOPS space telescope accidentally discovered a unique long-period transiting exoplanet – Nu2 Lupi d, which takes 107 days to loop once around its star. At the same time, the telescope helped scientists determine the approximate structure of all three exoplanets in the system. Study: https://www.nature.com/articles/s4