Russia's 'Sun-THz' Device to Boost Solar Storm Predictions from the ISS in 2026

Russia plans to install a new solar monitoring device, 'Sun-THz', on the International Space Station (ISS) in spring 2026. This device will help track solar radiation to improve space weather predictions, especially during periods of shifting solar activity like 'my activity'.

The 'Sun-THz' device weighs 47 kg and features eight detectors covering a wide frequency range. Mounted on a rotating platform, it will automatically follow the sun's movement while maintaining accuracy even in challenging conditions. Its primary role is to record solar radiation, helping researchers refine models of flare dynamics, particle acceleration, and plasma behaviour.

While the number of powerful solar flares is set to decline in 2026, overall solar activity will stay significant. The device's data will support long-term forecasting efforts, though a separate, long-duration experiment on another spacecraft may be needed for continuous real-time monitoring.

The project aims to strengthen understanding of solar flare mechanisms. By analysing high-frequency radiation, scientists hope to enhance predictions of space weather events that can impact satellites, communications, and power grids.

The installation of 'Sun-THz' on the ISS marks a step toward better solar monitoring. Its observations will feed into improved models of solar activity, particularly during 2026's transitional phase. The device's findings could also guide future missions focused on long-term space weather forecasting.