The newly described jets have a power output equivalent to that of trillions of suns and are so massive that researchers have nicknamed the megastructure Porphyrion after a giant from Greek mythology.

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.

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 ...

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 concept of Porphyrion, a jet of material 23 million light-years long that dates back to a time when the universe was less than half its present age.Credit...E. Wernquist/D.

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.

"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 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.

The energetic streams are together 23 million light-years in length—roughly as long as 140 Milky Way galaxies lined end to end Shi En Kim Reporter An artist’s illustration of the Porphyrion ...

"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 ...