Is there a physical limit to how big a black hole can grow?
In short: Black holes are famous for their insatiable appetite, consuming everything that crosses their event horizon. But as these galactic devourers feast on massive amounts of matter, scientists wonder if they eventually hit a biological-style ceiling or if there is a point where they simply cannot stomach any more.
The sheer scale of black hole growth is best illustrated by the discovery of 3C 273 in the early 1960s. Located approximately two billion light-years from Earth, this object was initially identified as a 'quasi-stellar object' or quasar because it emitted overwhelming luminosity across vast distances. It was eventually determined that the engine powering this brightness was a black hole situated at the heart of a distant galaxy. Early observations of this source revealed it was pouring out radio waves. No visible light counterpart was detected during the initial search for its identity.
This specific black hole is described as 'Brobdingnagian,' possessing an estimated mass roughly 900 million times that of our sun. Such immense proportions are achieved through the continuous feeding on vast quantities of matter. While these objects are known for their ability to consume everything that falls into them, the question remains whether there is a definitive upper limit to this growth process. The discovery occurred in the constellation of Virgo. This massive object is considered a feeding black hole rather than a standard star.
Understanding these limits involves studying how black holes interact with their environments over cosmic timescales. Because they can grow so astonishingly massive by feeding on surrounding material, they serve as primary laboratories for understanding the extremes of gravity and matter density in our universe. Researchers use these celestial bodies to explore how matter behaves under extreme conditions. These findings help clarify the physics of galactic engines and high-density environments.
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Sources
- Summary by Intellect · source: How Big Can Black Holes Grow?
- Also: How Big Is the Biggest Black Hole?
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