Researchers across six Indian institutions pinpoint the magnetic mechanisms driving microwave polar brightening, aiding space weather forecasting.
Geomagnetic activity reached three times the threshold usually needed to see auroras in Britain, pushing displays as far south as Devon and Kent.
A pair of coronal mass ejections merged in space and are expected to disturb high-latitude power grids and radio signals.
A moderate solar storm triggered by a recent solar flare means the aurora borealis could stretch as far south as New York and Washington state.
