Mysterious "ghost" radio emissions have been spotted by researchers, some that have lasted for 25 years, only to fade away and then return.
While the "ghost" emissions could be extremely common, the cause is still unknown, according to experts.
University of California at Berkeley Assistant Research Astronomer Casey Law believes the emissions could be the "afterglow of the explosion of a massive star, which would have emitted an undetected long-duration gamma-ray burst."
“We believe we are the first to find evidence for gamma-ray bursts that could not be detected with a gamma-ray telescope,” said Law in a statement.
“These are known as ‘orphan’ gamma-ray bursts, and many more such orphan GRBs are expected in new radio surveys that are now underway.”
WE NEED TO KEEP LOOKING FOR ALIENS, SCIENTISTS TELL SENATORS