CAPE CANAVERAL, Fla. (AP) — Scientists have discovered the oldest black hole yet, a cosmic beast formed a mere 470 million years after the Big Bang.
The findings, published Monday, confirm what until now were theories that supermassive black holes existed at the dawn of the universe. NASA’s James Webb Space Telescope and Chandra X-Ray Observatory teamed up over the past year to make the observations.
Given the universe is 13.7 billion years old, that puts the age of this black hole at 13.2 billion years.
Even more astounding to scientists, this black hole is a whopper — 10 times bigger than the black hole in our own Milky Way.
It’s believed to weigh anywhere from 10% to 100% the mass of all the stars in its galaxy, said lead author Akos Bogdan of the Harvard-Smithsonian Center for Astrophysics. That is nowhere near the miniscule ratio of the black holes in our Milky Way and other nearby galaxies — an estimated 0.1%, he noted.
“It’s just really early on in the universe to be such a behemoth,” said Yale University’s Priyamvada Natarajan, who took part in the study published in the journal Nature Astronomy. A companion article appeared in the Astrophysical Journal Letters. “It’s astounding how this thing actually is sitting in place already with its galaxy so early on in the universe.”
The researchers believe the black hole formed from colossal clouds of gas that collapsed in a galaxy next door to one with stars. The two galaxies merged, and the black hole took over.
The fact that Chandra detected it via X-ray confirms “without a doubt that it is a black hole,” according to Natarajan. With X-rays “you’re actually capturing the gas that is being gravitationally pulled into the black hole, sped up and it starts glowing in the X-rays,” she said.
This one is considered a quasar since it’s actively growing and the gas is blindingly bright, she added.