Astronomers have spotted the biggest pair of black hole jets ever seen, spanning 23 million light-years in total length. That's equivalent to lining up 140 Milky Way galaxies back to back.

A Milky Way-sized galaxy from the early universe appears to have stopped producing any new stars because a supermassive black hole at its center is blasting out all the material needed for stars to be forged,

The GS-10578 galaxy, known as Pablo’s Galaxy, formed about two billion years after the Big Bang but is essentially dead due to its inability to form new stars. The astronomers observed the black hole pushing out huge amounts of gas from the galaxy at a greater rate than what it needs to form new stars

Astronomers have used the NASA/ESA James Webb Space Telescope to confirm that supermassive black holes can starve their host galaxies of the fuel they need to form new stars. The results are reported in the journal Nature Astronomy.

"The [energy released from gas falling into the] the supermassive black hole is removing large amounts of gas very fast from the galaxy," D'Eugenio explained. "Without this gas, no new stars can be formed, so this galaxy is losing the `shine' of young and bright stars, and has already started it's long history of fading."

Astronomers have detected a supermassive black hole starving its galaxy of gas, halting star formation in the early universe.

Galaxies usually become chaotic when they run out of star-making fuel, but this one is going out surprisingly quietly.

Black holes suck in anything and everything that comes near them, even light cannot escape after crossing one of their event horizons, However they also produce massive outflows of plasma and one of those astrophysical jets just produced the largest megastructure ever observed.