Earlier this year, astronomers found an absolute monster of a galaxy.
Lurking some 3 billion light-years away, Alcyoneus is a giant radio galaxy reaching 5 megaparsecs into space. That's 16.3The discovery highlights our poor understanding of these colossi, and what drives their incredible growth.
We are pretty sure we know what produces the jets: an active supermassive black hole at the galactic center. We refer to a black hole as 'active' when it's guzzling down material from a giant disk of material around it. The team went looking for these outliers in data collected by the LOw Frequency ARray in Europe, an interferometric network consisting of around 20,000 radio antennas, distributed throughout 52 locations across Europe.
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