Astrophysics

Black holes can nevr be seen in space. Space is black and so are black holes. People can only see black holes because of the light around the black hole. When a black hole is consuming a giant star, you can see the light around the entire black hole. That's when you know that there is a black hole in the middkle of all that light.

The galaxy NGC 3842, around 320m light years from Earth in the constellation of Leo, has a black hole at its centre with a mass of around 9.7billion suns. An even bigger black hole with a mass of around 21billion suns exists at the heart of galaxy NGC 4889, the brightest galaxy in the Coma cluster, around 336m light years from Earth.

Source: http://www.guardian.co.uk/science/2011/dec/05/supermassive-black-holes-discovered-space

There is no definite boundary for matter not being pulled toward a black hole. At large distances the effects of a black hole's gravity are not different from that of a different object of the same mass. How far out a black hole's gravity is dominant depends on that black hole's mass and its proximity to other massive objects.

The perfect fit of the moon over the sun to create the corona during a solar eclipse is a unique phenomenon to Earth due to the relative sizes and distances of the moon and sun. On other planets with different sized moons or orbits, this alignment would not occur in the same way. It is not just luck, but a result of the specific conditions on Earth.

The area surrounding a black hole is called the event horizon. Any object that gets caught in the event horizon will never return. All black holes have an event horizon. Black holes that have a charge and a spin, will generally have an inner horizon (coinciding to the outer horizon, the event horizon). At the inner horizon, matter is infinitely compressed and then sucked into the singularity. Along with black holes are white holes (otherwise known as "anti-black holes"). White holes are the exact opposite of a black hole, instead of sucking and trapping matter to where it is lost from the universe, white holes spew out matter and return it to the universe. Most scientists agree that white holes don't exist in our universe because they are very unstable. If the white hole was able to exist at all, it would last for only a couple of milliseconds before evaporating. The main thing between a black hole and a white hole is that a white hole is the black hole in the future. Inside the inner horizon, something bizarre happens. Matter enters one of two very narrow laser like beams. One beam goes against the black hole's spin and has positive energy and moves forward in time, but here's the real brainteaser, matter that enters the beam moving WITH the black hole's spin moves backwards in time and has negative energy. These two beams are shot out of the black hole at either end at nearly the speed of light. The black hole is basically a giant particle accelerator. Now I was correct. When the black hole shoots out the two beams, it becomes the white hole from the distant future. The two are the same. Now I know you just wanted the answer to the event horizon, but I just wanted to share a little more knowledge.

Light that passes near a black hole but does not cross the event horizon is bent toward it in what is called gravitational lensing. The closer the light passes to the black hole, the more it is bent. For someone with an up-close view, this lensing would result in a highly distorted image of whatever is behind the black hole. Photons that cross the event horizon are lost inside of it forever, and their energy is added to the mass of the black hole.

When we say about the beginning of time we basically are talking about point Zero, the beginning of everything, the beginning of the universe. When did time begin? It is 13.7 million years ago, which is approx.

a black hole won't explode until the universe is almost dead. black holes will be the last thing in the universe just roving aroud searching for something to feed off of then once all energy is gone they die but they go out with a huge explosion.

a black hole won't explode until the universe is almost dead. black holes will be the last thing in the universe just roving aroud searching for something to feed off of then once all energy is gone they die but they go out with a huge explosion.

Black holes destroy planets or stars by exerting a powerful gravitational pull, which can rip them apart through a process known as spaghettification. Additionally, the intense tidal forces near a black hole can also strip away the outer layers of a star or planet, ultimately consuming them.

"after a supernova" is the adverb phrase in the sentence.

Black holes do not destroy things in the traditional sense of actively targeting and destroying objects. However, anything that crosses the event horizon of a black hole – known as the point of no return – will be unable to escape its gravitational pull, effectively being consumed by the black hole. This process, known as spaghettification, involves the stretching and tearing apart of matter due to the extreme gravitational forces near a black hole.

This same question was famously asked by 18th century astronomer, Heinrich Olbers; if the universe is static and filled with an infinite quantity of stars, any line of sight in any direction we might look in the night sky we should eventually end looking at a bright star or other illuminated object (despite the atmosphere's transparency, Rayleigh scattering of sunlight causes the daytime sky to appear bright, and have the blue color). There are many factors contributing to the apparent blackness of space. One is the transparency of the interstellar medium owing to the very tiny amount of matter in space (which is not already gathered gravitationally into stars, galaxies, planets, and so forth); another is the distribution of matter and the nature of matter itself - most matter in the universe is presumed not to interact electromagnetically, called "dark" - e.g., dark matter (otherwise it could heat up and glow); another is the age and expansion of the universe. The accepted scientific theories about the origin of the universe indicate there was a time when space was universally bright in all directions after the big bang - hot, dense, and opaque - but at a certain point ordinary matter condensed out of this plasma and the universe became transparent. The fairly directionally-uniform expansion of the universe brings other factors into play; since Hubble's law indicates that the further away galaxies are, the more quickly they recede away from an observer, there would be a theoretical limit at a certain distance where matter in an expanding universe would be redshifted into invisibility. Further, light from the big bang in an expanding universe would have its energy decreased into longer wavelengths not visible to the human eye - an idea supported by observations of a background cosmic radiation at microwave wavelengths. Other theories involving the nature of the universe itself may play a role, as might the finite age of the universe, the finite age of stars, and so forth.

Depending on the intent of the question, the consistency of a black hole might refer to one of several separate considerations. Perhaps most obviously, what a black hole 'consists of' might refer to its general anatomy; it would be described as a region in which the curvature of timespace becomes infinite owing to the presence of matter whose radius is smaller than its Schwarzschild radius, and from which the escape velocity is faster than the speed of light (hence, light doesn't escape). The nature of matter inside the black hole, while not directly observable, is believed to be concentrated at its center in a region called a singularity, which contains matter whose density is infinite (i.e., it exhibits mass but zero volume). As such, the type or kind of matter in this singularity is not yet adequately described by our physics and it sometimes referred to as 'exotic.' Since escape velocity from a specified distance from a mass decreases with increased distance from this singularity, there is a notional boundary where the escape velocity is c (the speed of light), a spherical or spheroidal region called the event horizon, which, if matter passes inward, it's a one-way trip - it would be unable to exit.

If the intent of the question relates to a physical property of matter other than mass, charge, or spin, (for example, the idea of consistency one might associate with texture) then one would have to refer to the 'no hair theorem', which states that properties other than these aren't really applicable, and in that sense, all black holes are similar. Note that properties such as size or overall density can be derived from mass. Outside the black hole other effects are often apparent, like the presence of an accretion disk of superheated infalling matter, or relativistic jets at the poles.

If the intent of the question refers to how often a black hole changes (i.e., is it consistent and unchanging in time) then one need only recognize that it will continue to exist so long as at least some matter is falling into it from the surrounding space. Fairly recent studies suggest that black holes may interact with the universe in such a way as to lose very small amounts of mass over time (see Hawking radiation). If a black hole were to be isolated such that no matter would fall in over an extremely long interval, it is conceivable that through this mechanism they would "evaporate" entirely and thus eventually cease to exist.

No.

A black hole intakes matter.

After it is broken down by gravity.

Then it releases it as particles (Neutrinos for example)

There is not another universe within a black hole. Nor do stars or matter stay within the black hole.

Of course all of this is theory with some really fun math attached to it.

This is a reference to the misery and human suffering associated with the Black Hole of Calcutta.

This is referring to an event that may have occurred at the Black Hole of Calcutta, which was the name of the converted guard room/holding cell of Fort William in Calcutta, India. After the fort was taken by the Naweb from the British on June 19, 1756, the Naweb held all of the British prisoners of war in this tiny room, during which time most of the prisoners were crushed to death or suffocated. This event's accuracy is dubious, and some believe that it's a tall-tale invented for British propaganda purposes. My source is linked below.

In a black hole, all matter and energy that crosses the event horizon gets sucked in due to the immense gravitational pull. This includes light, particles, and even information, which becomes trapped within the black hole's singularity at the center.

Astronomers studying black holes would typically need to study physics, particularly in the areas of general relativity, quantum mechanics, and thermodynamics, to understand the nature and behavior of black holes. They may also need to study astrophysics, cosmology, and computational modeling to analyze observational data and simulate black hole interactions with their surroundings.

The main characters in "Cosmic" by Frank Cottrell Boyce are Liam, Florida, Dad, and the other passengers who get involved in a cosmic adventure when Liam pretends to be an adult and wins a family trip to space.

Black holes can be detected using a variety of methods. While the black hole itself does not emit any radiation (or any other form of energy), high-energy radiation can still be emitted by matter that is being pulled into it. For example, if a black hole begins to consume a star that has ventured too close, the star will begin to emit x-rays, gamma rays, and/or particle jets as it is pulled apart. When a black hole is "feeding" it can be anything but black: the heat and energy emitted by the ill-fated star (or planet or another black hole or anything else for that matter) can make the location of the black hole to be quite bright.

Black holes can also be detected by spotting how they affect their nearby neighbours. They can cause "ripples" in space time, and as these gravitational waves move through space, their affect on objects can be detected and measured.

There is no black hole in the Pacific Ocean. Black holes are astronomical phenomena that occur in outer space and cannot form within Earth's oceans.

The fourth dimension is time. Since black holes have a strong gravitational pull, they are able to warp the fabric of space around them. As such, they also have an effect on time. As you approach a black hole, "frame dragging" occurs (which is the twisting of space and time), and the closer you get to the event horizon of the black hole this effect only intensifies. As such, the fourth dimension does become warped near a black hole.

Black holes are the closest thing known the have put a rip in time and space. We do not actually know what a black hole is made out of because we can not observe past the event horizon where light can not escape due to the black holes gravitational force.

You could say that a black hole when it is not "feeding" is made of pure force, it has been theorised that black holes are partly made up of radiation. But than again it is just a star that has imploded.

The discovery of cosmic rays, like many discoveries, unfolded over a period of time as understanding increased as to their nature. Some may say that Henri Becquerel discovered them along with other forms of ionizing radiation in 1896. In 1909 a device developed by Theodor Wulf showed that a certain type of radiation was higher with an increase in altitude, which was likely explained by the shielding effect of the atmosphere against cosmic rays. A further observation by Domonico Pacini showed in 1911 that a decrease in measured radiation underwater would have to be explained by sources outside Earth's radioactivity. In 1912, Victor Hess showed that the source of Wulf's radiation could not be the Sun.