this post was submitted on 11 Mar 2026
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Why SETI Might Have Been Missing Alien Signals (www.seti.org)
submitted 3 days ago* (last edited 3 days ago) by kalkulat@lemmy.world to c/science@lemmy.world
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"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."

Science paper: https://iopscience.iop.org/article/10.3847/1538-4357/ae3d33

Review article: https://www.theregister.com/2026/03/10/seti_admits_its_search_for/

Broadening of specral lines info: http://www.hyperphysics.phy-astr.gsu.edu/hbase/Atomic/broaden.html

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[–] victorz@lemmy.world 0 points 2 days ago

Very good point. Having advanced life so close to us to clearly detect is wild enough, but to also snipe the direction and time window is absolutely crazy.