Scientists Discover a Black Hole in Our Galaxy Firing a Particle Jet Straight at Earth

A Long-Theorized Cosmic Object Finally Found — and It's Aimed Right at Us

An international team of astronomers has finally managed to discover a class of object whose existence has been theorized for decades but never proven: a microblazar within our own Milky Way galaxy. The find is as dramatic as it sounds. Located roughly 12,000 light-years away, this compact stellar-mass black hole system drives high-velocity plasma jets toward Earth at three-quarters the speed of light, validating a theoretical prediction first proposed in the 1990s.

An international team led by astronomers in Spain, the Netherlands, and Argentina described the microblazar in a study accepted for publication in the journal Astronomy and Astrophysics. "It is the first time that we have a serious candidate," Josep Martí, an astronomer at the University of Jaén in Spain and first author of the study, told Live Science.

What Exactly Is a Microblazar?

Blazars are some of the most energetic objects in the universe. They are a type of quasar — a brightly glowing object fueled by a supermassive black hole stripping material from its host galaxy and then ejecting some of it in powerful, opposing jets of particles and radiation. To qualify as a blazar, one of those near-light-speed jets needs to point directly at Earth.

A microblazar operates on the same basic principle, except it's smaller. Its central engine is a stellar-mass black hole rather than one containing millions or billions of solar masses. Astronomers have previously discovered smaller versions of quasars, dubbed microquasars, and long theorized that there must be smaller versions of blazars as well. The discovery of this object finally closes that gap.

The Hidden Monster Behind a Dust Cloud

The system, known as IRAS 18293-0941, consists of a black hole feeding on material stripped from a massive companion star, which it orbits every 11 Earth days. Some of this material escapes the black hole after being channeled to its poles, from where it is blasted out as twin jets traveling at near light-speed. As lead researcher Josep Martí noted, "It sits behind so much dust that it is essentially invisible in ordinary optical images."

These objects are tricky to observe, Martí said. "Because of stellar evolution, you need to catch the system at the right time," he added. "The microquasar phase of evolution is very short, and so it is difficult to find one in that phase." The team overcame this challenge by combining data from multiple telescopes across different wavelengths of light — a strategy that proved essential. "This discovery highlights the power of studying the universe with different kinds of telescopes at the same time, because none of the individual telescopes could have told the entire story," said co-author Jakob van den Eijnden of the University of Amsterdam.

Why This Discovery Matters Beyond the Wow Factor

Researchers show that the power and geometry of IRAS 18293-0941 make it a viable accelerator of very-high-energy particles and a plausible contributor to an ultra-high-energy gamma-ray source. The receding jet propagates toward a dense molecular cloud, where it produces a radio hotspot and injects accelerated cosmic rays into the cloud, giving rise to high-energy emission. In other words, this system may be one of the engines quietly powering some of the most extreme radiation ever detected.

The discovery gives astronomers something they have wanted for years: a nearby laboratory for studying the same kind of physics normally seen around giant black holes in distant galaxies. Instead of looking across billions of light-years, they can now study a similar process taking place inside the Milky Way around a black hole only a few times the mass of the Sun. Outside researcher Itumeleng Monageng, an astronomer at the University of Cape Town, noted that the team's observations "present a previously overlooked mechanism for generating some of the highest energy emissions observed." As confirmation efforts continue, IRAS 18293-0941 stands to reshape how scientists understand the relationship between small black holes and the most powerful particle accelerators in the cosmos.