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Gas-rich circumstellar disks are the cradles of planet formation. As such,their evolution will strongly influence the resulting planet population. In theESO DESTINYS large program, we study these disks within the first 10 Myr oftheir development with near-infrared scattered light imaging. Here we presentVLT/SPHERE polarimetric observations of the nearby class II system SU Aur inwhich we resolve the disk down to scales of ~7 au. In addition to the newSPHERE observations, we utilize VLT/NACO, HST/STIS and ALMA archival data. Thenew SPHERE data show the disk around SU Aur and extended dust structures inunprecedented detail. We resolve several dust tails connected to the Kepleriandisk. By comparison with ALMA data, we show that these dust tails representmaterial falling onto the disk. The disk itself shows an intricate spiralstructure and a shadow lane, cast by an inner, misaligned disk component. Ourobservations suggest that SU Aur is undergoing late infall of material, whichcan explain the observed disk structures. SU Aur is the clearest observationalexample of this mechanism at work and demonstrates that late accretion eventscan still occur in the class II phase, thereby significantly affecting theevolution of circumstellar disks. Constraining the frequency of such eventswith additional observations will help determine whether this process isresponsible for the spin-orbit misalignment in evolved exoplanet systems.

Disk Evolution Study Through Imaging of Nearby Young Stars (DESTINYS): Late infall causing disk misalignment and dynamic structures in SU Aur