The Unbelievable Scale of Black Holes Visualized
Understanding the size of black holes
Black holes, those enigmatic entities in the vast expanse of the universe, stand as one of the most perplexing phenomena known to humanity. At its core, the concept of black holes is grounded in the mathematical understanding that any object possessing mass has the potential to transform into a black hole. This includes not only celestial bodies but also everyday entities – you, me, the device on which you are currently viewing this video, and everything else – given the conditions that lead to their compression into an incredibly small space. This phenomenon is encapsulated by the term Schwarzschild Radius.
To grasp the profound implications of this idea, consider the scenario where all the matter within an object is condensed to its individual Schwarzschild Radius. The result is an unimaginable density, wherein the gravitational pull becomes so intense that not even light can escape. The prospect of transforming oneself into a black hole seems fantastical – requiring the condensation of all bodily matter into an area one sextillion times smaller than a grain of sand.
As we delve into the intricacies of black holes, the magnitude of their strangeness becomes more apparent with the increasing mass that gets crushed down into these cosmic entities. Take, for example, a Boeing 777 jet, a colossal machine of our own creation. If, somehow, this aircraft were to undergo a metamorphosis into a black hole, its entire mass would be compressed into an area with a mind-bogglingly minuscule radius of just 3.386^-22 meters. To put this into perspective, compare it to the size of a hydrogen atom, the smallest atom, with a radius of just 10^-11 meters. The scale of this difference is akin to comparing the size of a human red blood cell to the entire island of Sicily – an astronomical contrast that challenges our cognitive grasp of scale.
However, this incredibly tiny black hole would be short-lived, succumbing to the effects of Hawking Radiation, which would cause the complete evaporation of its mass in just one second. Here, an astonishingly strange occurrence unfolds – the entire mass of the minuscule black hole is converted into an astronomical amount of energy, equivalent to five million megatons of TNT. This is a staggering 87,000 times more powerful than the largest nuclear bomb ever detonated by humanity, with the potential to obliterate an entire planet.
To extend this exploration further, envision transforming formidable landmarks, such as Mount Everest or the Earth itself, into black holes. The sheer impossibility of these scenarios adds layers of complexity to our understanding. For instance, if Earth were condensed into a black hole, everything we know, love, or despise – every person and entity that has ever existed – would need to be crushed into a space the size of a single U.S. penny. Astonishingly, replacing Earth with this penny-sized black hole would yield no observable change in our solar system, as the mass remains constant, allowing our moon to orbit the black hole as if nothing occurred.
The journey into the realm of black holes continues as we explore their capacity to grow in size by absorbing additional matter from their surroundings. They can engulf nearby gas, dust, stars, or even entire solar systems. Consider the black hole XTE J1650-500, believed to be the smallest ever discovered. With a radius slightly larger than the island of Manhattan, it contains the mass of five to ten Suns within its tiny domain. Yet, larger black holes, like GCIRS 13E, potentially rivaling the size of the continent of Europe, encapsulate the mass of 1,300 Suns.
Venturing into the cosmic landscapes, we encounter extraordinary entities like HLX-1, an intermediate-sized black hole with a radius of 295,300 kilometers – wider than four Jupiters placed side by side. Remarkably, it holds the mind-boggling mass of 100,000 Suns. At the heart of our Milky Way Galaxy lies the Supermassive Class black hole, Sagittarius A, with a colossal radius of 12,700,000 kilometers, containing the mass of 4,300,000 Suns. However, the pinnacle of enormity awaits in the form of S5 0014+81, an Ultramassive Class black hole. Its radius, 1,600 times greater than the distance between Earth and the Sun, harbors the mass of forty billion Suns.
Attempting to comprehend the sheer magnitude of these black holes, one can envision multiplying the size of the already colossal Sun by forty billion times – a staggering mass equivalent to an unfathomable number of Toyota Corollas. The vastness of these cosmic behemoths challenges our innate understanding of scale, urging us to peer into the cosmic abyss with awe and humility.
About the Creator
Nico Cox
Student in Sports and Exercise Sciences, but filled with interest and curiosity about the world, astronomy, natural catastrophes, and political sciences. Writing for fun and out of personal interest. Enjoy the read!


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