Radio silence has long puzzled those searching for extraterrestrial intelligence, but the answer might lie much closer to the ...

For four decades, many SETI experiments have focused on finding sharp spikes in frequency but the new study says signals may not stay narrow as they travel away from their home system.

A new study by the SETI Institute suggests that the alien signals might be right here, surrounding us all of the time, and we're just unable to pick them out.

We may be missing alien radio signals because they have become smeared beyond the narrowband detectors that SETI utilizes, a new study suggests.

Stellar plasma can smear alien radio signals before they escape their star system, making them harder for astronomers to detect.

SETI researchers may have missed alien signals due to a cosmic phenomenon that distorts narrowband radio waves, new research ...