China’s FAST radio telescope detected an intriguing narrowband signal while observing the direction of K2-155 d, a super-Earth about 238 light-years away. Before anyone packs snacks for first contact, the researchers say the evidence currently leans toward radio interference from Earth.
The signal passed several initial technosignature filters. It was narrow, appeared in the target observation and came from a scientifically interesting planetary system. That makes it worth investigating—not proof that somebody 238 light-years away finally found a frequency without morning DJs.
Why researchers remain skeptical
Earth and near-Earth space are crowded with transmitters, satellites and electronic contamination. Signals can enter telescope data through side lobes, equipment or sources that are difficult to identify after the fact.
Researchers found characteristics inconsistent with a clean extraterrestrial source, including behavior that makes local interference more plausible. The signal has not been independently repeated from K2-155 d.
Verification requires another detection
A credible technosignature would need repeat observations, movement consistent with the target system and confirmation by independent instruments. One unexplained narrowband event is a candidate for follow-up, not a cosmic press conference.
The verified fact is that FAST recorded a signal during the observation. The speculation is that aliens produced it. Right now, humanity’s own electronic clutter remains the favorite, continuing our proud tradition of interrupting the search for intelligent life.
Facts first. Side-eye included.
DJF separates what is confirmed from what is claimed—and tells you why this particular mess is worth your time.
Wade Crowley
Strange News & Small-Town WeirdWade collects stories that begin with “You are not going to believe what happened at the Walmart.” He covers odd crime, local legends, UFOs, and reality losing the plot.
“Somewhere, a police report is already getting weirder.”