The signal, known as Fast Radio Burst (FRB), lasted only a matter of milliseconds.
The pulse's fast, low frequency suggests that the blast was extremely bright and originated from an insanely powerful source somewhere in the cosmos.
Plenty of invisible light is shooting across the universe, but most of it is recognizable to scientists, such as signals from dying stars, black holes, magnetic fields, and the like, Live Science notes.
"Fast radio bursts are exceedingly bright given their short duration and origin at great distances, and we haven't identified a possible natural source with any confidence", he said previous year. Prior to that, none of the "heard" FRB was not below 700 MHz.
There was a Fast Radio Burst called FRB 121102, which was heard many times in the past years.
Located in British Columbia, the new radio telescope heard a unusual signal through the noise.
The reason this FRB, named FRB 180725A, was so special?
CHIME is located in British Columbia and its FRB from last month was reported in a post by the Astronomer's Telegram.
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"The event is clearly detected at frequencies as low as 580 MHz and represents the first detection of an FRB at radio frequencies below 700 MHz", Patrick Boyle wrote in the report.
"Additional FRBs have been found since FRB 180725A and some have flux at frequencies as low as 400 MHz".
Apparently, it is said that all these signals come from the Milky Way but few of them are dated back to billions of years ago.
Scientists can not yet identify the process which produces the short and sharp radio wave bursts, which means we can not rule out the possibility they were made by aliens.
Christopher Conselice, a professor of astrophysics at the University of Nottingham told Daily Mail, this discovery could help to pave the way for a greater understanding of what causes FRBs.
FRB are very rare, because experts are still trying to explain their origin, not excluding the possibility of explosion of a black hole or echo developed extraterrestrial civilizations.
'It could even be some other physical mechanism that we don't yet understand'. Other possible origins include supernovas (exploding stars), supermassive black holes or various other sources of mighty electromagnetic radiation, such as pulsars.