Dan Werthimer, a researcher at the University of Berkeley involved in the Search for Extraterrestrial Intelligence (SETI), has expressed skepticism regarding Chinese scientists’ claims about signals from intelligent aliens. The signals were reportedly detected by China’s “Sky Eye” telescope, but Werthimer believes they are from human radio interference rather than extraterrestrial sources.
The controversy arose when news circulated about potential signals from space detected by the Five-hundred-meter Aperture Spherical radio Telescope (FAST), nicknamed “Sky Eye.” These signals, picked up in 2019 and 2022 during a scan of exoplanets, were initially speculated to be of alien origin. However, Werthimer clarified that they are likely human-generated signals, as natural sources typically don’t produce narrow-band radio signals.
Despite claims in Chinese media suggesting possible extraterrestrial origins, Werthimer emphasized that the signals are artificial but are most probably from Earth-based sources. He explained that the sensitivity of telescopes like FAST can detect various terrestrial signals, including those from cell phones, television, radar, and satellites, leading to potential misinterpretation.
Chinese scientists involved in the research also acknowledged the possibility of radio interference and are conducting further investigations to confirm the signal’s origin definitively. This caution reflects the complexity of distinguishing between signals from space and those from human activities, especially with the growing presence of satellites and radio devices.
Werthimer highlighted previous instances where similar signals initially thought to be from aliens were later attributed to human interference, underscoring the challenges faced in SETI research. Despite these setbacks, astronomers remain optimistic about the existence of extraterrestrial life, given the vastness of the universe and the potential for habitable planets.
While the current signals may not be of alien origin, the search for intelligent life continues, driven by the belief that life beyond Earth is probable. Werthimer noted the historical evolution of SETI techniques and technologies, acknowledging the ongoing advancements that may lead to real discoveries in the future.
The complexities of SETI research, including the interpretation of signals and the influence of human activities, highlight the ongoing quest to unravel the mysteries of the cosmos and potentially find evidence of extraterrestrial intelligence.