The newly discovered pair, nicknamed Porphyrion after a rebellious giant in Greek mythology, were spotted in observations from LOFAR, a network of radio wave detectors in the Netherlands.

The new jet, announced in the journal Nature, has been dubbed “Porphyrion” (a giant in Greek mythology) by its discoverers at the California Institute of Technology in the United States.

It’s the equivalent of 140 Milky Ways lined up end-to-end. The study describing the jet megastructure, dubbed Porphyrion after a mythological Greek giant, is published today in Nature.

An artist's illustration of the longest black hole jet system ever observed. Nicknamed Porphyrion after a mythological Greek giant, these jets span roughly 7 megaparsecs, or 23 million light-years.

An artist's illustration of the longest black hole jet system ever observed. Nicknamed Porphyrion after a mythological Greek giant, these jets span roughly 7 megaparsecs, or 23 million light-years.

Before these jets—nicknamed Porphyrion after a giant in ancient Greek myth—were discovered, it was thought that supermassive black hole jets couldn't get larger than 5 megaparsecs, or about 16 ...

This artist’s illustration shows what one of Porphyrion’s jets might look like close to its source; the orange arrow on the left points to the supermassive black hole itself. DESY/Science ...

The gigantic jets have been given a suitably mythic name, with the team that discovered the megastructure dubbing them "Porphyrion" in reference to the giant offspring of Gaia in Greek mythology.

"The Milky Way would be a little dot in these two giant eruptions." The jet megastructure, nicknamed Porphyrion after a giant in Greek mythology, dates to a time when our universe was 6.3 billion ...

The largest-ever black hole jets ever seen hint that these cosmic monsters may play an even more significant role in shaping galaxies than previously thought. Astronomers have spotted the biggest ...