biostudies-literaturePalmerio EAcademy of FinlandAustrian Science Fund FWFUK Space AgencyEuropean Research CouncilScience and Technology Facilities CouncilBelgian Federal Science Policy OfficeCentre National d’Etudes Spatialese2021JA029770https://www.ebi.ac.uk/biostudies/studies/S-EPMC9286593biostudies-literatureUnknown126(11)One of the grand challenges in heliophysics is the characterization of coronal mass ejection (CME) magnetic structure and evolution from eruption at the Sun through heliospheric propagation. At present, the main difficulties are related to the lack of direct measurements of the coronal magnetic fields and the lack of 3D in-situ measurements of the CME body in interplanetary space. Nevertheless, the evolution of a CME magnetic structure can be followed using a combination of multi-point remote-sensing observations and multi-spacecraft in-situ measurements as well as modeling. Accordingly, we present in this work the analysis of two CMEs that erupted from the Sun on April 28, 2012. We follow their eruption and early evolution using remote-sensing data, finding indications of CME-CME interactJournal of geophysical research. Space physicsMagnetic Structure and Propagation of Two Interacting CMEs From the Sun to Saturn.PMC9286593724391310445P 31521312390P31521‐N27ST/S000429/1Sanchez-Cano BProvan GTao CZhukov ANRoussos EKilpua EKJJian LKPalmerio EBradley TJMays MLFutaana YWitasse OLamy LNieves-Chinchilla TMostl CMasters ABarnes DfalseMagnetic Structure and Propagation of Two Interacting CMEs From the Sun to Saturn.One of the grand challenges in heliophysics is the characterization of coronal mass ejection (CME) magnetic structure and evolution from eruption at the Sun through heliospheric propagation. At present, the main difficulties are related to the lack of direct measurements of the coronal magnetic fields and the lack of 3D in-situ measurements of the CME body in interplanetary space. Nevertheless, the evolution of a CME magnetic structure can be followed using a combination of multi-point remote-sensing observations and multi-spacecraft in-situ measurements as well as modeling. Accordingly, we present in this work the analysis of two CMEs that erupted from the Sun on April 28, 2012. We follow their eruption and early evolution using remote-sensing data, finding indications of CME-CME interact2021-01-01T00:00:00Z2021 Nov2025-04-26T21:47:43.619Z2022-08-05T06:26:08.755ZS-EPMC92865933586494810.1029/2021JA029770