As if we didn’t have enough to worry about on Earth with climate change, the rise of artificial intelligence, or the threat of nuclear conflict, there’s an even bigger cosmic issue that could put it all to shame: supermassive black holes.
A supermassive black hole located in the Large Magellanic Cloud (LMC) may be playing a role in the movement of nine stars currently speeding through our galaxy. According to the Harvard-Smithsonian Center for Astrophysics’ Jiwon Jesse Han, this black hole could have a mass around 600,000 times that of our Sun.
For comparison, the one at the center of the Milky Way is about four million times the mass of the Sun.
As the Large Magellanic Cloud (LMC) continues its inevitable path toward colliding with our galaxy, it’s only a matter of time before Earth faces the potential threat of being engulfed by a supermassive black hole, though thankfully, this event is far enough in the future that we won’t be around to witness it.
The existence of this black hole was discovered by analyzing hypervelocity stars, which travel at speeds exceeding 500 kilometers per second. Emily Hunt from the Max Planck Institute for Astronomy in Germany explains that these high speeds can’t be explained by supernovae alone, suggesting these stars are being accelerated by the gravitational pull of a supermassive black hole.
Although the research is still awaiting peer review, it’s believed that around half of the Milky Way’s hypervelocity stars could trace their origins to the LMC’s black hole. Nine of these stars have been tracked to a region in the northern sky known as Leo Overdensity.
Han, who is leading the study, explained, “We can trace the paths of these stars and see that they originate from the LMC.”
While it was once thought that black holes might be hiding in dwarf galaxies, proving their existence has been elusive. The LMC, being about 163,000 light-years away, offers a unique opportunity to observe stars orbiting it. Han hinted, “I have a good idea of where to look, but I’m not giving away the coordinates just yet.”
Further research is necessary, but this supermassive black hole stands out due to its relatively small size, less than a million times the mass of the Sun. If confirmed, it could provide valuable insights into how black holes evolve from stellar-sized objects into cosmic giants capable of devouring entire star systems.
Han explained, “One of the biggest questions in astronomy is how supermassive black holes first formed. Studying supermassive black holes in dwarf galaxies could reveal clues about the initial seed mechanisms that started it all. This would be the first direct detection of such a black hole in a dwarf galaxy.”
Despite ongoing efforts, Han believes that even advanced observatories like the Event Horizon Telescope might struggle to capture this elusive phenomenon in action.
