“In early 2018, something in our cosmic backyard blasted out powerful jets of energy for up to a minute about once every 18 minutes for three months. Then it stopped.
Despite being one of the brightest radio objects in the sky, it went unnoticed until a team of astronomers looked back at data collected by the Murchison Widefield Array (MWA) telescope in outback Western Australia.
"When it is on, it is brighter than the next brightest thing in the sky in that area, which is a supermassive black hole [millions of light-years away]," said Natasha Hurley-Walker, an astrophysicist at Curtin University and the International Centre for Radio Astronomy Research…”