Stellar Space Weather Distorts Interstellar Signals, Shaping SETI Searches
To the point
Scientists at the SETI Institute say space weather from stars can distort radio signals, so some interstellar messages may be weakened or shifted and missed; by analyzing historical spacecraft transmissions at different distances from the Sun, they found noticeable distortion up to about 6.26 million kilometers, stronger when closer to the Sun, implying that searches for extraterrestrial signals should model stellar activity to better match arriving signals rather than just those sent.