NASA’s James Webb Space Telescope has confirmed the existence of a supermassive black hole that has been ejected from its home galaxy, traveling through interstellar space at a velocity that allows it to traverse the distance between Earth and the Moon in just 14 minutes.
A high-speed trajectory across interstellar space
The black hole, which possesses a mass 10,000,000 times that of the Sun, is moving at approximately 1,000 kilometers per second.
Shock waves and the formation of a 200,000 light-year trail
As the object moves through interstellar space, it compresses and heats the gases in its path, generating a powerful shock wave.
This physical process has resulted in the formation of new stars within a bright gas trail left behind the object. Observations show this gas trail extends roughly 200,000 light-years in length.
Escaping the gravitational pull of the original stellar system
The black hole is currently located about 230,000 light-years away from its former galaxy.
This distance serves as evidence that the object successfully overcame the gravitational pull of its original stellar system.
Clues from Hubble and the James Webb Space Telescope
Researchers used a combination of early data from the Hubble Space Telescope and detailed observations from the James Webb Space Telescope to identify this as the first supermassive black hole known to have left its galaxy.
Scientists suggest two primary scenarios that could have caused such a dramatic departure.
Galactic mergers or three-body systems eject the black hole
One possibility is that an ancient merger between galaxies released enough energy to eject the central black hole from its starting position. Alternatively, the object may have been part of an unstable three-body system that resulted in one of the bodies being thrown into interstellar space.