Who knows a lot about black holes and can explain them in a easy to understand but detailed way?

Answer 1

I wouldn't consider myself an expert, but I do know a bit about the subject... Here goes...

Throughout the universe, there are billions upon billions of stars... And they're all different sizes. All stars have a life cycle; they don't simply exist, they develop and evolve. As each star burns, it uses up it's internal fuel (a process called Nuclear Fusion, but I'll explain that if you ask another question!). Eventually, the fuel it has is spent and the star dies... But here's where the size of the original star comes in.

Starting with small stars, when they die they simply spread out as they cool. These stars become very large in size and becasue they are colling down, shine a reddish colour instead of the bright white we see ususally... These are "Red Giants".

Bigger stars act differently... They have enough material left in them that gravity pulls it all back in on itself (the higher the mass of anything, the more effect gravity has). If this happens, the dying star shrinks massively, and as it does so, the remaining energy in the star gets condensed into a smaller and smaller package. Eventually, the star is so hot with energy, it simply can't hold itself together anymore and it explodes violently, spreading material for millions of miles around... This type of "star death" is a Super Nova and all that matterial it throws out forms Nebulae (the cool wispy dust clouds in space), and these nubulae over billions of years can clump together to make entire solar systems... So anywhere you get planets, you can be sure that the sun once went super nova... Including our sun! (better yet, think of it like this... all the material on our planet, including the stuff that makes us, was once made inside our sun before it went super nova... We literally are made of stardust!)

Ok... Now that we know the background, heres the thing about black holes... Remember, this is a theory at best, but it fits the observations.

The biggest stars die also. But just like stars that go Super nova, they start to collapse in on themselves. The difference here is that there is so much material collapsing, that gravity becomes the overiding force... The gravity increases as the package of material gets smaller. This is becasue while gravity is a powerful force, it only acts over relatively small distances... So if you shrink a dying star, distances between atoms gets less, and so gravity increases. Like a super nova, as it shrinks, nuclear fusion starts up again and creates all sorts of new, heavier elements... And once such element that we believe is created (but only when there is enough energy) when such massive stars collapse is called Neutronium.

Neutronium is so heavy, that we believe one thimble full would outweigh the entire popluation of the earth! It's easy to see then that an entire star full of this stuff would have a massive amount of mass, and therefore a massive amount of gravity.

Eventually, the gravity gets so massive that quite literally, NOTHING can escape... not material (hence no super nova explosion), not even light itself... Light acts strangely... sometimes it acts like it's a stream of particles, other times it's like a wave of energy... near a black hole, it's the particle behaviour that kicks in and the "particles" of light are quite literally sucked into the massive gravity well.

In other words, a black hole is actually not a hole at all. It's a massive star that has collapsed. The only reason we can't see it is that the light it would normally emit is simply sucked back before it can leave.

You often get around black holes something called an "accretion disk"... this is simply a disk of space dust or debris that was unluck enough to get too close and it spirals into the black hole... that's the image that most sci-fi writers love to use to show a black hole.

As for what happens inside a black hole... nobody knows... It's safe to assume that you can't destroy matter or energy... You can convert one to the other, but you can't destroy it... So what happens to all the matter and material that goes in?! I'm afraid I can't answer that one...

They also reckon that one of the things required to form a galaxy is a massive black hole in it's centre, literally anchoring all the stars in place in the galaxy... Of course this means that eventually, everything will be sucked into it! Don't worry too much though... That won't happen to our galaxy for BILLIONS of years!

Hope that wasn't too long winded, and I hope it helps.

Answer 2

First you have to know just a little bit about Einstein's relativity. One thing is that what we know as gravity is actually a distortion of space caused by the presence of any mass. Imagine a flat sheet of rubber with a bowling ball sitting on it. Where the bowling ball rests there will be a distortion in the rubber sheet. That distortion represents the force of gravity because if you were a tiny creature trying to climb up and out of the distortion it would take energy to do so. Now just substitute space for the rubber sheet and any mass for the bowling ball. This concept of gravity isn't theory either -- it's been proven to actually be the way things work in our universe.

One other thing you need to understand is that everything in our universe is embedded in the space of the universe and when these things move they must follow whatever the geometry (..shape..) of the space is that they move through. This includes light itself.

Finally, science has learned that its possible for so much mass to exist that its gravity (..distortion of space..) is so immense that nothing can have enough energy to escape it, not even light. Therefore such an object can never been seen, hence the name black hole.

Answer 3

>My best understanding is that stars, when they expire, can either >explode or implode. If it explodes, it creates a supernova. If it >implodes, it creates a black hole.

Not quite. A star will, when it expires implode first, and then explode. The creation of a stellar black hole is just a function of the former's star's mass. If a star is massive enough to explode in a supernova it will either become a neutron star (about 1.5 - 5 times as massive as the sun) or a black hole (if the star was more than 5 times as massive).

When a black hole is formed the space-time- continuum is warped by its gravity forming some kind of "pocket" from which nothing not even light can escape.

Answer 4

They are not easy to understand. They are not completely understood and most of the explanations use words like theory and anomaly. My best understanding is that stars, when they expire, can either explode or implode. If it explodes, it creates a supernova. If it implodes, it creates a black hole. As a star grows close to death it gets smaller and smaller. If it doesn't explode, it gets so small that it reaches a point at which the density tips over and creates the rip/vortex/anomaly/black hole. It opens a tunnel of force to never never land, it seems. We don't know where it comes out, etc.

Answer 5

A black hole, is an object with sufficient density that the force of gravity prevents anything from escaping from it except through quantum tunneling behavior. Black hole is predicted by general relativity,[1] to be an object with a gravitational field so powerful that even electromagnetic radiation (such as light) cannot escape its pull

Answer 6

Simply, as you increase the surface gravity of a celestial body the surface orbital speed increases.
When the surface orbital speed reaches the speed of light,no light can escape the surface,hence the black hole.
It is a very logical theory,but it won't hold up to a very objective analysis.
Any way this is the essence of a black hole.

Answer 7

The denser an merchandise is, the better is the exterior gravity and the better is likewise the so referred to as get away speed. you could think of the get away speed as a results of fact the cost, at which you should throw a stone so it does no longer fall back to you back. A black hollow is a collapsed famous individual, which has substitute into so dense, that that's get away speed became as intense as a results of fact the cost of sunshine. no longer even gentle can get away it, it falls back into it. that's why they are "black" or invisible. As no longer something can shuttle speedier as a results of fact the cost of sunshine, this additionally means that all and sundry different gadgets won't be able to get away. Black holes may be very huge, and there is one such black hollow in each and every galaxy. there's a relation between the mass of the galaxy and the mass of the helpful black hollow. The black hollow interior the midsection of our galaxy weights 3,seven-hundred,000 situations extra advantageous than the solar. yet once you're a techniques away, black holes at the instant are not distinctive in terms of gravity like different stars or planets - you could orbit around them, they do no longer suck you into them. yet once you fall into them, you will no longer have the means to return. rather, you will lead to a nonetheless unknown style interior the exterior of the black hollow.

Answer 8

Blackholes have a huge gravitational field that electromagnetic radiation. So whatever comes near the thing will pretty much be brought into it. We have no idea what these black holes are, I am sure they are just semi-permeable fields of worm holes, that spit things out in a different space and time. But i dont know im just talking

Answer 9

i think black holes are the after effect of a supanova. (star collapsing) the theory is that even though the object no longer exists the gravitational pull once holding it in place begings to suck things into it. the reason why its called a "black hole" is the beleif that they also suck in light particles as well meaning no light shines through it and therefore can not be seen but the force of it can be felt.

Answer 10

Look up author "Neil deGrasse Tyson" an excellent writer on this type of subject and makes it understandable to the average person.