John Timmer's Ars Technica article reports that TOI-2535b, a hot Jupiter watched transiting its K dwarf star for about seven years, stopped transiting, with its transit times shifting by up to six hours and durations shortening. The researchers suspect an unseen companion, at least Saturn-sized and orbiting in a different plane, is causing what they call the fastest rate of inclination change observed for an exoplanet around a single star.