The Solar Orbiter mission, an international cooperation between ESA and NASA, is currently orbiting the Sun at heliocentric distances ranging from 0.95 to 0.29 au. Solar Orbiter now has an orbital inclination of 17 degrees and recently completed its first perihelion with this new perspective of the Sun’s poles in March 2025. As the mission continues towards an inclination of approximately 33 degrees, it is an exciting time to study dynamics within the inner heliosphere.

The overall goal of Solar Orbiter is to understand how the Sun creates and controls the heliosphere. The mission provides unprecedented imaging of the Sun’s photosphere, chromosphere, and corona, enabling studies of the origin and evolution of the Sun’s atmosphere, the solar wind, solar eruptions, and energetic particle events. The combination of high-resolution imaging and simultaneous in-situ measurements from Solar Orbiter’s inner-heliospheric vantage point offers a unique opportunity to link solar sources directly to their heliospheric impacts.

This session invites contributions that address the Solar Orbiter science objectives, exploit multi-mission data sets, and studies of the connections between the Sun and the heliosphere. We also welcome Solar Orbiter-related contributions in the fields of theory and numerical simulations that contribute to a better understanding of the solar origins of heliospheric variability and space weather.