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Cake day: December 16th, 2025

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  • Turbulent plasma near distant stars could blur ultra-narrow signals before they leave their home star systems, making them difficult to detect.

    New Insight: Stellar “space weather” may blur ultra-narrow radio signals from extraterrestrial civilizations before they leave their home star systems

    The Challenge: SETI searches typically look for extremely sharp frequency spikes. If a signal is broadened by plasma turbulence near its source, it may fall below traditional detection thresholds.

    What Causes It: Density fluctuations in stellar winds and eruptions such as coronal mass ejections can distort radio waves from the transmitting planet.