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.

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.

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 ...

Porphyrion, named after a giant from Greek mythology, is a cosmic megastructure that amassed when the universe was only 6.3 billion years old, and spans roughly the same distance of 140 Milky Ways.

These colossal jets, nicknamed Porphyrion, are the largest ever recorded. Their scale is so immense that they measure the equivalent of 140 Milky Way galaxies, laid end to end. The origin of these ...

"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 ...

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 ...

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.

A pair of jets blasting out of a black hole spans 23 million light years, the equivalent of 220 Milky Way galaxies in length. This is so large that it may change our understanding both of black ...