A mysterious radio signal from a nearby star system that was detected in 2019 isn’t coming from aliens, scientists say.
published Wednesday in the journal Nature Astronomy.
One of the reasons this signal was so promising was because it was the first time that data from Breakthrough Listen — a privately funded project that scans the skies for radio signals from one million of the closest stars to Earth — had passed screening tests to rule out immediate other explanations.
This was exciting not only because of the apparent proximity of the signal, but because Proxima Centauri’s system has been one of interest for years. The star is orbited by at least two planets, one of which is believed to have the right circumstances for liquid water on its surface, something scientists look for in other planets when searching for signs of life, or environments that could support it.
However, when researchers pointed the telescope at Proxima Centauri in 2020 and 2021 at the same time of year as the original signal observance, they were unable to pick up the signal again.
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