The Sun’s atmosphere is the birthplace of multi-scale magnetic activity (e.g., flares, CMEs, jets, waves, and radio emissions). This activity drives a variety of solar physics phenomena such as the heating and acceleration of the solar wind, energetic particles, and space weather impacting the whole heliosphere. Parker Solar Probe (PSP) is the first human-made object diving into the solar corona. By the EGU 2024, PSP would have completed 19 of its 24 planned orbits. PSP flew as close as 11.40 solar radii from the Sun’s center as it inches closer to its ultimate perihelion of 9.86 solar radii on 24 December 2024. PSP launched during solar activity minimum and is now experiencing increasing solar activity as the solar cycle climbs to its maximum around 2024-25. PSP data have already led to fundamental new insights into the processes driving the solar wind, CMEs, and SEPs. Remote sensing observations of the solar corona from within the Alfvén critical boundary yielded spectacular fine structures of coronal outflows not visible from 1 au. Beyond breakthroughs in solar and heliospheric physics, PSP has facilitated discoveries in the physics of planets, asteroids, comets, and dust particles. Combining the PSP, SolO, and DKIST observations with observations from other space-born missions and ground-based observatories (e.g., SDO, STEREO, Proba2, ACE, WIND, DSCOVR, and BBSO) and with theoretical models promise a wealth of further exciting findings. This session invites scientific contributions to all aspects of research addressed to exploring the inner heliosphere and solar corona, with a particular focus on the new observations from PSP and SolO and other complementary observations and models. The session is in collaboration with the special session dedicated to the Solar Orbiter.