NASA-Funded Study Finds Space Weather Broadens Technosignals, Challenging Narrowband SETI Searches
To the point
Vishal Gajjar and Grayce C. Brown of the SETI Institute warn that space weather from solar activity, solar wind, and coronal mass ejections can broaden radio signals as they travel, so SETI searches should use higher observing frequencies and broadening-aware methods instead of relying on narrowband spikes.
