Nature Astronomy, Published online: 06 June 2024; doi:10.1038/s41550-024-02288-7

What drives the solar wind complexity and variability seen in the heliosphere remains an unresolved mystery. Unique high-resolution observations and measurements taken at 0.5 au, coupled with magnetic modelling and spectroscopic techniques, show that the variability is driven by spatio-temporal changes in the magnetic connectivity to multiple solar source regions.

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