In 2017 the international multi-agency Next Generation Solar Physics Mission (NGSPM) Science Objectives Team published its final report, setting out the highest-priority science questions for solar physics in the coming decade and the measurements and instrumentation needed to answer them:

- How is the hot, dynamic outer solar atmosphere formed and sustained?
- What drives large-scale solar eruptions, and how can we predict them?
- What mechanisms govern the solar cycle and irradiance variability?

JAXA's multi-agency SOLAR-C and NASA’s Multi-slit Solar Explorer (MUSE) will soon launch to address these recommendations. SOLAR-C combines the EUV High-throughput Spectroscopic Telescope (EUVST), which will observe the solar atmosphere with unprecedented plasma diagnostic capability, with the Solar Spectral Irradiance Monitor (SoSpIM), which provides complementary full-Sun EUV spectral irradiance measurements. MUSE is a multi-slit spectrograph that will provide imaging spectroscopy of the corona at multiple wavelengths, up to 100 times faster than current instruments. The collective power of SOLAR-C and MUSE will transform our ability to probe the multi-scale physics of the corona, from small-scale energy release to its large-scale impacts.

Europe is central to delivering SOLAR-C. France is fabricating the EUV grating, Germany is contributing to calibration, testing and components, Italy is providing the slit, and Switzerland is building SoSpIM. The European Space Agency is providing the short-wavelength camera (which is being built in the UK).

This session invites observers, modellers and theoreticians to present current work and discuss future directions across solar physics to promote strong European science return from these missions. It also welcomes work highlighting the strong European contribution to SOLAR-C.