The Vacuums of Space
Well, a black hole is kind of like a vacuum. as things get close enough to it, it gets sucked in. But this kind of vacuum is at a much more dramatic scale. Black holes are so violently powerful that it is impossible for anything, not even light, can escape its relentless pull.
Most say you can't actually see it. Well... Yes and no, really. You can't actually see the black hole itself, but you can make out its dimensions by looking at the objects getting affected by it. For example, light. Let's say a huge cluster of stars just so happens to fly into its reach. Now, if a star really would do that, that would take a couple million years. But anyway, this star cluster is in reach of the hole. When it gets pulled in, what you can see is not the hole itself, but rather, the light of the stars crossing the border between the inside of the black hole and normal space. You can also see the jet of energy beaming out on an axis of the black hole, which is the energy of its swallowed stars.
The Birth of a Swirling Vortex
Variations of Black Holes
Black holes are measured on three systems. The first is its magnetic field, which is a fundamental part of all celestial bodies. The second is its mass, measured in solar masses. If a black hole is 10-100 solar masses, its mass class is 'stellar.' If it is in the millions to billions, it is supermassive, which seemingly appears at the center of all large galaxies. The third is its size, measured by the length of what's called a Schwarzschild (SHWARZ-child) radius. Now you're probably thinking, "What is that supposed to mean?" Well, If you really want to know, keep reading.
Parts of a Black Hole
Every black hole has three basic parts. The first is the singularity. This is the old core of the star that died whilst creating the black hole. The second is what's called an Event Horizon, which is the boundary line between space and the black hole. The last is the Schwarzschild radius. This radius is the distance between the singularity and the event horizon.
Kinds of Black Holes
There are three kinds of black holes: Schwarzschild, Reissner-Nordstrøm (REESE-ner NORD- strum) and Kerr. The first and simplest is the Schwarzschild, which is no more than any standard black hole, with just its three basic parts. The second, the Reissner-Nordstrøm, is a bit more advanced, as its space-time properties are flipped. Putting it in easier terms, the inside of the event horizon is solely one of space, and the singularity is one of time. However, inside the Reissner-Nordstrøm black hole, the event horizon is one of time and the singularity is one of space. The last black hole is the Kerr, which is the most advanced solely because it spins. This spin creates an egg-shaped sphere of distorted space called the ergosphere.