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Missing technosignatures? Turbulent plasma may blur ultra-narrow signals before they leave their home star systems
- March 5, 2026 at 9:20 PM
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A new study by researchers at the SETI Institute suggests that stellar "space weather" could make radio signals from extraterrestrial intelligence harder to detect. Stellar activity and plasma turbulence near a transmitting planet can broaden an otherwise ultra-narrow signal, spreading its power across more frequencies and making it more difficult to detect in traditional narrowband searches. The paper is published in The Astrophysical Journal.
Originally published at Phys.org