Astrophysical Journal Study Finds Space Weather Could Distort Alien Signals, Especially Around M-Dwarfs

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SETI researchers say space weather from other stars can blur and scatter ultra-narrow radio signals aimed at Earth, which could explain why we haven’t heard messages, especially around common low-mass M-dwarf stars, and Grayce C. Brown notes that measuring this effect could tailor searches to what actually arrives on Earth, a finding reported in the March Astrophysical Journal as part of ongoing technosignature work, while SETI’s extragalactic survey began in September 2024 with the Murchison Widefield Array scanning over 2,880 galaxies and marking the first search beyond our galaxy, and the institute is also monitoring TRAPPIST-1 for signs of advanced civilizations amid rising public interest sparked by congressional hearings and remarks by Barack Obama and Donald Trump, as reported by Eric Lagatta of the USA TODAY Network.