The two balloon-like structures stretch hundreds of light-years and are thought to have formed in a violent eruption seven million years ago.
Scientists have discovered two gargantuan radio bubbles at the center of the Milky Way, near the galaxy's supermassive black holes. These never-before-seen structures are believed to have formed during a"staggeringly powerful" eruption about seven million years ago, potentially from huge amounts of matter falling into the black hole, or from a massive burst of star formation.
Researchers propose two possible sources for the radio bubbles. They could be the result of mass falling into the supermassive black hole:"For instance, a star being torn to shreds, with some of its matter going into the black hole, never to come out, while other portions get flung outwards with enormous energy," Camilo said.
Camilo said that with either of these two options, you would end up with the inflation of a hot bubble like the ones observed. The bubbles were created an estimated seven million years ago and have been expanding ever since."Within a few more million years they'll likely dissipate to the point where they'll be indistinguishable from the background radio emission from the central regions of the galaxy," he added.
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