Proof of LIFE: Scientists record mysterious radio signals from deep space

Scientists have reported to have seen the new bursts release six times from the same location - in the past only one has ever been repeated.

The fast radio bursts suggest there could be more out there, researchers say. "We estimate that there are up to 1,000 of these bursts in the entire sky every day", corresponding author Shriharsh Tendulkar of McGill University said in an email. The first signal to do this was named FRB 112102 and was observed by accident in 2007.

It's not perfectly clear what is causing them but there are a number of theories.

A telescope in Canada picked up mysterious signals emanating from a distant galaxy.

Having two sets of repeating bursts could also allow scientists to understand what distinguishes them from single bursts, helping them understand more about their source and watch for future blasts. The existence of a second repeating burst suggests there could be many more of the mysterious signals in the cosmos.

Researchers at the University of British Columbia in Canada said they've discovered the second so-called "repeating fast radio burst" (FRB) ever recorded, according to a news release published January 9.

"We have discovered a second repeater and its properties are very similar to the first repeater".

The repeating signals are brief but powerful phenomena, and they are estimated to be energetically comparable to the total output of the sun over 100 years, noted.

At distances of billions of light years it's obviously very hard to test any of these theories, but detecting more FRBs, especially those that have a habit of repeating, could bring us closer to an explanation.

They're milliseconds in length and are typically thought to come from powerful space shit like black holes or super-dense neutron stars, but some researchers reckon they could even be evidence of advanced alien civilisations. In some of the 13 cases, the signal at the lower end of the band was so bright that it seems likely other FRBs will be detected at frequencies even lower than CHIME's minimum of 400 MHz.

'Or near the central black hole in a galaxy.

While most FRBs have been spotted at wavelengths of a few centimetres, the latest FRBs were detected at wavelengths of almost a metre, which opens up new lines of inquiry, according to the CHIME team. "But it has to be in some special place to give us all the scattering that we see".

"[We now know] the sources can produce low-frequency radio waves and those low-frequency waves can escape their environment, and are not too scattered to be detected by the time they reach the Earth", he said. "There are some models where intrinsically the source can't produce anything below a certain frequency", said Arun Naidu of McGill University.