did we receive a radio signal from space

“It comes down to being able to tell the difference between a very distant technosignature and our own technology.” There are tons of signals,” Siemion tells National Geographic. “All of our SETI experiments are conducted in an absolute sea of interference. Another mysterious low-energy burst of radio waves stumped scientists until they discovered it was no more than a microwave oven in the radio telescope’s break room. Some led to the discovery of natural phenomena like pulsars-quickly rotating neutron stars or white dwarfs that emit electromagnetic radiation beams. Over the years, astronomers have identified several candidate signals, writes National Geographic. Using telescopes around the world, astronomers with Breakthrough survey millions of stars closest to Earth, searching for planets in the habitable zone of stars and for transmissions from other intelligent life. In 2015, Silicon Valley investor Yuri Milner and Stephen Hawking began the Breakthrough Initiatives. “Our WiFi, our cell towers, our GPS, our satellite radio-all of this looks exactly like the signals that we’re searching for, which makes it very hard to tell if something is from space or from human-generated technology,” Sheikh tells Nadia Drake for National Geographic.įor nearly four decades, scientists at SETI have searched for signs of extraterrestrial life. With the large volume of space technology orbiting the Earth and beyond, it can be extremely challenging to pinpoint which signals may be non-human-made, writes astronomer Seth Shostak for SETI. Though the wobbling frequency helps scientists rule out a terrestrial explanation for the signal, the beam could have come from a travelling satellite or other device. “It’s the most exciting signal that we’ve found in the Breakthrough Listen project, because we haven’t had a signal jump through this many of our filters before,” Sofia Sheik, a graduate student at Pennsylvania State University and the Breakthrough team member leading the signal analysis, tells Scientific American. This signal is a far narrower frequency than what scientists typically can observe from human-made devices like satellites and spacecraft, according to Scientific American.Īdditionally, there is an apparent shift in the beam’s frequency, which makes the finding especially compelling because it mimics the drift observed when planets in motion give off signals. There, they picked up a signal, dubbed BLC-1 after the Breakthrough Listen initiative.īLC-1 is a narrow beam of around 982 megahertz.

The star system is home to two planets, one of which may be rocky and temperate like Earth. “It has some particular properties that caused it to pass many of our checks, and we cannot yet explain it,” Andrew Siemion, Breakthrough Listen’s principal investigator, tells Jonathan O’Callaghan and Lee Billings for Scientific American.Īt the Parkes Observatory in Australia, the team uses a 210-foot-wide radio telescope to study Proxima Centauri. But they have yet to find a terrestrial culprit and have not yet ruled out an extraterrestrial intelligence origin story. The scientists behind the discovery explain that there are several potential non-alien explanations for the strange signal. The odd radio emissions seemed to be coming from the direction of Proxima Centauri, the closest neighboring star to our sun at 4.2 light-years away, reports The Guardian's Ian Sample last week. This fall, researchers noticed evidence of a strange radio emission while looking through archival data from 2019. Scientists detected a mysterious radio signal from a nearby galaxy, which begs the question-could it be aliens?Īs part of the Search for Extraterrestrial Intelligence (SETI) program, astronomers working on the Breakthrough Listen project scan for radio signals that could come from some non-human intelligent life in the cosmos.

Did we receive a radio signal from space