Authors: Shaheda Begum Shaik (George Mason University), Mark Linton (Naval Research Laboratory), Phillip Hess (Naval Research Laboratory), Sarah Gibson (National Center for Atmospheric Research)

We present a CME and the interior structure of its cavity imaged by the Wide-field Imager for Solar Probe (WISPR) on board the Parker Solar Probe (PSP) in the seventh PSP encounter. We observe a complex structure of the three-part CME with a cavity consisting of non-concentric nested rings in the WISPR field of view. This CME is associated with a quiescent prominence eruption on the Eastern solar limb as observed by STEREO-A spacecraft on 19 January 2021, and possibly related activity observed at its west limb indicating a global scale eruption. We study the morphology of the WISPR nested rings cavity and its evolution during different phases of the eruption, considering observations from STEREO and Earth-Sun line instruments for clues to the CME’s solar origins and its evolving 3D morphology.