The Sun’s corona is the birthplace of the solar wind, coronal mass ejections, associated shock waves and solar energetic particles which all are fundamental drivers of space weather. The key physical processes at the origin of these phenomena, i.e. the heating and acceleration of the coronal plasma and energetic particles, have not been clarified to date. During EGU 2021 Parker Solar Probe (PSP) will go through its eight´s perihelion of its 24 scheduled orbits around the Sun. During this perihelion the spacecraft will go as close to the Sun as 15.6 solar radii. PSP has already provided a treasure trove worth of in-situ and remote sensing data. The data from the previous orbits have revealed phenomena never seen before. Solar Orbiter (SO) was successfully launched on 10 February 2020. The in-situ instruments have become fully operational and the remote sensing instruments have also been switched on. Combining the PSP observations with data from SO, with remote sensing observations from SDO, STEREO and Proba2, with other in-situ data, e.g., from ACE and DSCOVR, with ground-based observations and with theoretical models is a challenging and exciting task. This session invites scientific contributions on all aspects of research addressed to the exploration of our near-Sun environment, with special focus on the new observations from PSP and SO and other complimenting observations and models.
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