I watched a movie about black holes at the planetarium the other day. It was amazing. Now I want to learn about them. So what do you know that's interesting.
Yes. I know that the term is offensive. They're called holes of color now. Get up to speed, will ya? :-)
I know that if you're truly interested in knowing what's known about them, you should read some of the books by Charles Seife.
https://en.wikipedia.org/wiki/Zero:_The_Biography_of_a_Dangerous_Idea
IKR?! Rimming a black hole can be deadly.
ROTFLMAO!
I haven't yet explored any... I mean, we... We haven't been able to see them up close. I mean... Wait a second here.
Leonard Susskind has this theory that information is not lost when things fall into a black hole. One paradox created by black holes is that black holes are described by only a few parameters - mass and angular momentum. When things fall into them, it seems that the information those things had is essentially lost. Susskind theorized that the information may be preserved as a hologram of sorts on the 2 dimensional surface of the black hole's event horizon. Apparently it turns out that the surface area of the event horizon in Planck units is proportional to the total amount of information, or something like that... I'm probably mangling it at this point, so maybe check out this video and see what he has to say about it:
depends on how to start because I don't know what you know
black holes are formed from dying stars with a minimum mass of 1.5 solar mass. The mass of the star collapse to form a neutron star, if the mass of the neutron star is higher than 3 solar mass, it collapse further to form a black hole. The mass of the black hole is defined by the Schwarzchild radius, I don't remember the equation. Binary stars will become black hole regardless of their mass because when one of them die they will become a white dwarf, then when the other will die, the star will expand and the white dwarf will absorb all the helium form the dying start to initiate another nuclear reaction and become a star again. The white dwarf will have more mass then will pass the 1.4 solar mass limit ( there is a name I can't remember) then will become a black hole,
something else too http://www.space.com/30802-black-holes-accretion-disks-sounds.html
What is NOT interesting about them? Everything is interesting about black holes. What a cool way to spend an afternoon.
A black hole is a region of spacetime exhibiting such strong gravitational effects that nothing—including particles and electromagnetic radiation such as light—can escape from inside it.[1] The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole.[2][3] The boundary of the region from which no escape is possible is called the event horizon. Although crossing the event horizon has enormous effect on the fate of the object crossing it, it appears to have no locally detectable features. In many ways a black hole acts like an ideal black body, as it reflects no light.[4][5] Moreover, quantum field theory in curved spacetime predicts that event horizons emit Hawking radiation, with the same spectrum as a black body of a temperature inversely proportional to its mass. This temperature is on the order of billionths of a kelvin for black holes of stellar mass, making it essentially impossible to observe.
Objects whose gravitational fields are too strong for light to escape were first considered in the 18th century by John Michell and Pierre-Simon Laplace. The first modern solution of general relativity that would characterize a black hole was found by Karl Schwarzschild in 1916, although its interpretation as a region of space from which nothing can escape was first published by David Finkelstein in 1958. Black holes were long considered a mathematical curiosity; it was during the 1960s that theoretical work showed they were a generic prediction of general relativity. The discovery of neutron stars sparked interest in gravitationally collapsed compact objects as a possible astrophysical reality.
Black holes of stellar mass are expected to form when very massive stars collapse at the end of their life cycle. After a black hole has formed, it can continue to grow by absorbing mass from its surroundings. By absorbing other stars and merging with other black holes, supermassive black holes of millions of solar masses (M☉) may form. There is general consensus that supermassive black holes exist in the centers of most galaxies.
Despite its invisible interior, the presence of a black hole can be inferred through its interaction with other matter and with electromagnetic radiation such as visible light. Matter that falls onto a black hole can form an external accretion disk heated by friction, forming some of the brightest objects in the universe. If there are other stars orbiting a black hole, their orbits can be used to determine the black hole's mass and location. Such observations can be used to exclude possible alternatives such as neutron stars. In this way, astronomers have identified numerous stellar black hole candidates in binary systems, and established that the radio source known as Sagittarius A*, at the core of our own Milky Way galaxy, contains a supermassive black hole of about 4.3 million solar masses.
On 11 February 2016, the LIGO collaboration announced the first observation of gravitational waves; because these waves were generated from a black hole merger it was the first ever direct detection of a binary black hole merger.[6] On 15 June 2016, a second detection of a gravitational wave event from colliding black holes was announced.[7]
I forgot about Len. He was an interesting human and then he kind of faded into intellectual oblivion 
The correct terminology is African American Holes.
The black hole is entirely imaginary. By definition, you can't see it. Since science is defined by observations, the black hole is not scientific. It is fiction.
Black hole theory violates several known laws, one of them being the law of gravity. Newton published his shell theorem showing that gravity in a solid sphere decreases to zero at the center. That is because all the mass is pulling away from the center, so the net effect is zero. So gravity can't build up the way the theory says it can. Another part of the theory is that electrons and protons can be squeezed together to make neutrons. No such thing has ever been observed. It is entirely made up. Third, a nucleus can only exist with certain combinations of protons and neutrons called islands of stability, and as the nuclei get larger the islands of stability get farther apart. If a collection is off by even one particle it flies apart instantly. So neutronium is impossible.
In Einstein's theory the gravitational field, manifest in the curvature of spacetime, is coupled to its sources by the field equations, the sources being described by an appropriate energy-momentum tensor, and so the Principle of Superposition does not apply. This means that one cannot simply pile up masses in any given spacetime because the field equations must be solved for each and every configuration of matter proposed.
(This paragraph was taken from http://news.yahoo.com/black-holes-may-supermassive-eating-stars-134604121.html but they deleted it from the article. Apparently somebody couldn't stand the implication of what it said.)
Second source: http://www.thunderbolts.info/wp/2012/08/16/a-blind-man-in-a-dark-room-looking-for-a-black-hole-that-isnt-there-2/
For the final nail in the theory, it depends heavily on the gravitational constant being constant, which it is not. It varies in the third decimal.
https://en.wikipedia.org/wiki/Gravitation_constant
Thank you, charface. This subject is something I'd like to learn more about. Now I will. I hope they aren't too mathematical; such books tend to be. Anything beyond grade 10 math would be a little over my head.
Nevertheless, thanks once again.
Wasn't it Leonard Susskind who challenged Stephen hawking about something, and Hawking conceded?
