For your info: the Kepler 90 system was discovered in 2013 with 7 planets orbiting the star, that's an impressive number, but not unique in the history of exoplanets. in 2017, an AI program named Deep Learning evaluated the data provided by the kepler telescope and came to the conclusion, that there must be an 8th planet, Kepler 90-i, orbiting the star, making the system a one of a kind 8 exoplanet system.
the only other star system, that we know to have 8 planets is our own one.
this event has been in the news recently and i am surprised, that this wasn't added into the game yet.