Description:

Over the last five decades, Heliophysics research has benefited multiple disciplines, some of which directly impact our daily lives. However, there are scientific challenges and limitations to understanding our dynamic star —the Sun—and its impact on the geo- and planetary environments. This knowledge is essential to mitigate the effects of solar and geo- (and planetary) dynamics on humanity as we aim to explore the far reaches of the solar system and beyond. Heliophysics is now in the era of multi-viewpoint science. With STEREO, Parker Solar Probe, Solar Orbiter, and instrumentation on planetary missions, we are able to make valuable observations from outside the Sun-Earth line. However, most observations are achieved from a single platform (spacecraft), typically the Sun-Earth line or within the ecliptic plane. As a result, significant gaps in our knowledge of our star and its environment cannot be resolved from single-viewpoint observations. Analogous limitations exist for the magnetosphere and Ionosphere, Thermosphere, and Mesosphere (ITM) Physics. We need a different approach to studying the Sun, its heliosphere, and planetary environments. Combining existing observations and coordinating the scientific planning activities from multiple platforms to develop a broader understanding of heliospheric and space weather phenomena is a step forward compared to a single vantage point. But we need a pioneering strategy to come to terms with these challenges. For this session, we invite contributions concerning using multiple points of view in developing our understanding of solar and heliospheric phenomena, space weather applications, and the future of multi-viewpoint observations of the heliosphere. Contributions pertaining to future missions and mission concepts on this topic are also welcomed.