The Meaning of Life, the Universe, and Everything.
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My parents, nerds that they are, explained black holes to me when I was four years old. I spent the next year sure planet earth would be sucked into one and we would perish in darkness. I don't know where they got off telling me crap like that.
My parents, nerds that they are, explained black holes to me when I was four years old. I spent the next year sure planet earth would be sucked into one and we would perish in darkness. I don't know where they got off telling me crap like that.
Proof that we don't need demons, ghosts and aliens to scare the living **** out of our young.
If you guys are interested in the sci-fi-ish stuff about Black Holes you should watch the movie " Event Horizon". the movie could have been done better with such a brilliant idea, but it does have a very creepy element to it.
***Minor Spoiler!***
The Event Horizon is a ship that they built in the future capable of harnessing a Black Hole to travel through space and time, the ships maiden voyage doesn't go quite right and they go missing, years later a distress call from the Event Horizon is heard, it seems they are back? A crew is sent to look for them, but where have they been all this time?
I think that "Black Hole" is somewhat misleading name as it is accurate. I think it's just a spherical vaccum that will one day in the far future combine with everything else, reach such an immense size that it will collapse on itself and forming another Big Bang
Quote from Krondelo »
If you guys are interested in the sci-fi-ish stuff about Black Holes you should watch the movie " Event Horizon". the movie could have been done better with such a brilliant idea, but it does have a very creepy element to it.
***Minor Spoiler!***
The Event Horizon is a ship that they built in the future capable of harnessing a Black Hole to travel through space and time, the ships maiden voyage doesn't go quite right and they go missing, years later a distress call from the Event Horizon is heard, it seems they are back? A crew is sent to look for them, but where have they been all this time?
Only good thing about it IMO is the "science" and Laurence Fishburn
I think that "Black Hole" is somewhat misleading name as it is accurate. I think it's just a spherical vaccum that will one day in the far future combine with everything else, reach such an immense size that it will collapse on itself and forming another Big Bang.
Well, actually, it's anything but a vacuum since it has more mass per cubed unit than anything else in the observable universe, and a vacuum is a space empty of matter. You're right though, that a non-rotating black hole is perfectly spherical, but it does lose mass over time due to Hawking radiation. If it can't suck up enough crap and doesn't have immense mass to wait, then it will die, so one sucking up the whole universe I don't believe is plausible with the gigantic spaces between galaxies (the black hole's chow :3).
I think that "Black Hole" is somewhat misleading name as it is accurate. I think it's just a spherical vaccum that will one day in the far future combine with everything else, reach such an immense size that it will collapse on itself and forming another Big Bang
Quote from Krondelo »
If you guys are interested in the sci-fi-ish stuff about Black Holes you should watch the movie " Event Horizon". the movie could have been done better with such a brilliant idea, but it does have a very creepy element to it.
***Minor Spoiler!***
The Event Horizon is a ship that they built in the future capable of harnessing a Black Hole to travel through space and time, the ships maiden voyage doesn't go quite right and they go missing, years later a distress call from the Event Horizon is heard, it seems they are back? A crew is sent to look for them, but where have they been all this time?
Only good thing about it IMO is the "science" and Laurence Fishburn
Haha, yeah true.
About what you said concerning black holes. You say that as if there is only one black hole?
Scientist have discovered a lot of black holes, anytime a big enough star dies it forms a black hole.
Scientist even confirmed what may have been the largest Black Hole ever seen, it was near the center of the Milky Way I believe, they only knew it was there because they were calculating the trajectory of the stars orbiting the black hole. One of the stars was clocked at something insane like 25 Million miles per hour.
Its truly mind boggling to even fathom a massive star moving that fast. I can't really remember the numbers behind it but I think it was even much faster.
About what you said concerning black holes. You say that as if there is only one black hole?
Scientist have discovered a lot of black holes, anytime a big enough star dies it forms a black hole.
Scientist even confirmed what may have been the largest Black Hole ever seen, it was near the center of the Milky Way I believe, they only knew it was there because they were calculating the trajectory of the stars orbiting the black hole. One of the stars was clocked at something insane like 25 Million miles per hour.
Its truly mind boggling to even fathom a massive star moving that fast. I can't really remember the numbers behind it but I think it was even much faster.
Well obviously there are more then one (The one at the centre of the galaxy I think was something around fifty million or billion solar masses, don't remember) but they are perfectly capable of "eating" each other and it was that way I went. So, possibly, when a black hole reaches an immense size like that of the whole mass of the universe it bursts like a metaphorical bubble and the universe lives one again.
I mean everything we know is to my knowledge moving outwards. So it has to stop at some point and start going back due to how gravity and momentum works. Then squeeze back into a tiny penny then blow up all over again. It's a theory thus not perfect.
I think that "Black Hole" is somewhat misleading name as it is accurate. I think it's just a spherical vaccum that will one day in the far future combine with everything else, reach such an immense size that it will collapse on itself and forming another Big Bang
Not very likely...
Although I think you're referring to 'vacuum' as being a generic term, black holes are not vacuums.
Vacuums consist of relatively no matter, while black holes are extremely (possibly infinitely) dense matter that has an extremely powerful gravitational effect.
As well, it is believed that black holes emit radiation in a process called 'black hole evaporation'. As the name implies, if this theory is proven true then that would mean black holes do not exist forever.
This is implied by the nature of quantum mechanics itself.
While it is possible for Black holes to merge with other black holes, to form supermassive black holes... it doesn't negate anything we know about black holes.
Also, because of it's massive (possibly infinite) density, there is no way for a black hole to collapse on itself again. At least not in any sense that our reality would indicate.
Instead this is how they are created in the first place, usually through a supernova or collision of stars.. creating an intense mass that collapses after using all of it's 'fuel'. Eventually this mass will form a singularity and curve space-time itself.
So (this is my own theory based off of the poster's theory in which I am replying) if a black hole were to 'create another big bang', it would probably do so when it is formed... and therefore the 'White Hole', is actually a 'Big Bang' formed from the creation of a new universe through means of a black hole.
However, if it is proven that black holes do emit radiation and eventually dissipate, like it is believed that they do, the creation of a 'big bang', or even 'White Holes', are unlikely theories.
Also, because of it's massive (possibly infinite) density
You pretty much summed up what I said in my last post with more detail, but I'd just like to expand on what you said here. A whole black hole with infinite density is impossible, so I think you mean the singularity, because for infinite density there would have to be infinite mass if the volume is definable enough, as for black holes.
Also, because of it's massive (possibly infinite) density
You pretty much summed up what I said in my last post with more detail, but I'd just like to expand on what you said here. A whole black hole with infinite density is impossible, so I think you mean the singularity, because for infinite density there would have to be infinite mass if the volume is definable enough, as for black holes.
That's not exactly true...
Because of the nature of singularities, they are thought to have an infinite density, because the entire mass of the singularity is within one point, and therefore has no radius and no volume.
However, mass of the object is not infinite, it simply occupies a single point within space-time.
This is a quote from Wikipedia:
At the center of a black hole as described by general relativity lies a gravitational singularity, a region where the spacetime curvature becomes infinite.[50] For a non-rotating black hole this region takes the shape of a single point and for a rotating black hole it is smeared out to form a ring singularity lying in the plane of rotation.[51] In both cases the singular region has zero volume. It can also be shown that the singular region contains all the mass of the black hole solution.[52] The singular region can thus be thought of as having infinite density.
Also, going back to add to my last post... if anyone is curious what the differences are between the 'Big Bang', black holes, and white holes... I found this very informative site: http://www.weburbia.com/physics/universe.html
It also explains how the 'Big Bang' and white holes may be related... although, that is not the currently accepted view by scientists.
An interesting thing about Black Holes when they emit GRB's.
This image depicts a Gamma Ray Burst. These burst can last anywhere from milliseconds to a few minutes long, usually a few seconds though. These GRB's emit as much energy as the Sun does in its lifetime in just a few seconds. Most observed GRB's are seen in or outside the Milky Way Galaxy as far as I know. Scientist have speculated that the end of the Earth will be caused by a GRB directed at Earth. If Earth was in the path of one of these GRB's it would be like getting Nuked in a microwave times 1,000,000. I guess it depends how far away the GRB originated, even at 1,000 light years away. Who knows how far, but say even at 1 million lights years away don't you suppose the radiation would still kill us over time?
Also, because of it's massive (possibly infinite) density
You pretty much summed up what I said in my last post with more detail, but I'd just like to expand on what you said here. A whole black hole with infinite density is impossible, so I think you mean the singularity, because for infinite density there would have to be infinite mass if the volume is definable enough, as for black holes.
That's not exactly true...
Because of the nature of singularities, they are thought to have an infinite density, because the entire mass of the singularity is within one point, and therefore has no radius and no volume.
However, mass of the object is not infinite, it simply occupies a single point within space-time.
I was talking about black holes themselves not being able to have infinite densities, not their singularities. Maybe I'm just being too critical with words here...
I think that "Black Hole" is somewhat misleading name as it is accurate. I think it's just a spherical vaccum that will one day in the far future combine with everything else, reach such an immense size that it will collapse on itself and forming another Big Bang
Although I think you're referring to 'vacuum' as being a generic term, black holes are not vacuums.
Vacuums consist of relatively no matter, while black holes are extremely (possibly infinitely) dense matter that has an extremely powerful gravitational effect.
Well I thought that was obvious but apparently not. I meant that Black Holes are basically cosmic vacuum cleaners, not that they use actual vacuum. As for the rest of your post that I cut out, it was an interesting read. I had no idea that Black Holes slowly died which means that something is able to escape the hole or is the radiation created at the event horizon? Because if light is matterless then why do radiation escape if not that it is created at the event horizon or that light does have some form of matter in it.
Life was most likely in our galaxy. I was watching this episode of national geographic that said long, loooooong ago Mars most likely had life supporting elements and could've actually had life! Apparently though, once a planet loses it's thriving conditions that support life, it can never gain them back. There's a planet that really interests me, it's a water giant. It's this huge planet with nothing but water that's so deep, it makes our deepest oceans look like you can touch the bottom with your feet and have your head above water. It also orbits a sun, so they're saying it potentially could have life. Also, everyday on this water giant is sunny with no clouds, considering it's nothing but deep oceans. I could have some facts wrong, but it's just so mind boggling and so interesting, I can hardly contain myself. Most of you have probably heard of Gliese 581 g, it's a planet in the goldilocks zone like our planet, and is the most similar planet to ours! It has gravity similar to earth, not too far, or too close to it's sun, and although the contents of it's atmosphere is unknown, it could contain liquid! look it up on youtube! Sorry for being so off topic though. . . . EDIT: Added more to my writing! Search "water giant planet" for more information on the planet! There's not much on the water giant planet though, so here's a link. http://www.rense.com/general49/dsndt.htm The information hasn't really been updated though, just look at the date above the article. . . National geographic has an episode about a water giant they found though. You could look for that. Heres another link. http://news.nationalgeographic.com/news ... phere.html
Life was most likely in our galaxy. I was watching this episode of national geographic that said long, loooooong ago Mars most likely had life supporting elements and could've actually had life! Apparently though, once a planet loses it's thriving conditions that support life, it can never gain them back. There's a planet that really interests me, it's a water giant. It's this huge planet with nothing but water that's so deep, it makes our deepest oceans look like you can touch the bottom with your feet and have your head above water. It also orbits a sun, so they're saying it potentially could have life. Also, everyday on this water giant is sunny with no clouds, considering it's nothing but deep oceans. I could have some facts wrong, but it's just so mind boggling and so interesting, I can hardly contain myself. Sorry for being so off topic though. . . .
I have not learned of any water-covered exoplanet discovery. Do you know any sites or articles related to it?
Life was most likely in our galaxy. I was watching this episode of national geographic that said long, loooooong ago Mars most likely had life supporting elements and could've actually had life! Apparently though, once a planet loses it's thriving conditions that support life, it can never gain them back. There's a planet that really interests me, it's a water giant. It's this huge planet with nothing but water that's so deep, it makes our deepest oceans look like you can touch the bottom with your feet and have your head above water. It also orbits a sun, so they're saying it potentially could have life. Also, everyday on this water giant is sunny with no clouds, considering it's nothing but deep oceans. I could have some facts wrong, but it's just so mind boggling and so interesting, I can hardly contain myself. Sorry for being so off topic though. . . .
I have not learned of any water-covered exoplanet discovery. Do you know any sites or articles related to it?
Actually that is exactly what many theoretical physicists propose would happen if you passed into a black hole.
Proof that we don't need demons, ghosts and aliens to scare the living **** out of our young.
***Minor Spoiler!***
The Event Horizon is a ship that they built in the future capable of harnessing a Black Hole to travel through space and time, the ships maiden voyage doesn't go quite right and they go missing, years later a distress call from the Event Horizon is heard, it seems they are back? A crew is sent to look for them, but where have they been all this time?
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Retired StaffOnly good thing about it IMO is the "science" and Laurence Fishburn
Venit, quessit, induravit.
Well, actually, it's anything but a vacuum since it has more mass per cubed unit than anything else in the observable universe, and a vacuum is a space empty of matter. You're right though, that a non-rotating black hole is perfectly spherical, but it does lose mass over time due to Hawking radiation. If it can't suck up enough crap and doesn't have immense mass to wait, then it will die, so one sucking up the whole universe I don't believe is plausible with the gigantic spaces between galaxies (the black hole's chow :3).
Haha, yeah true.
About what you said concerning black holes. You say that as if there is only one black hole?
Scientist have discovered a lot of black holes, anytime a big enough star dies it forms a black hole.
Scientist even confirmed what may have been the largest Black Hole ever seen, it was near the center of the Milky Way I believe, they only knew it was there because they were calculating the trajectory of the stars orbiting the black hole. One of the stars was clocked at something insane like 25 Million miles per hour.
Its truly mind boggling to even fathom a massive star moving that fast. I can't really remember the numbers behind it but I think it was even much faster.
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Retired StaffWell obviously there are more then one (The one at the centre of the galaxy I think was something around fifty million or billion solar masses, don't remember) but they are perfectly capable of "eating" each other and it was that way I went. So, possibly, when a black hole reaches an immense size like that of the whole mass of the universe it bursts like a metaphorical bubble and the universe lives one again.
I mean everything we know is to my knowledge moving outwards. So it has to stop at some point and start going back due to how gravity and momentum works. Then squeeze back into a tiny penny then blow up all over again. It's a theory thus not perfect.
Venit, quessit, induravit.
Not very likely...
Although I think you're referring to 'vacuum' as being a generic term, black holes are not vacuums.
Vacuums consist of relatively no matter, while black holes are extremely (possibly infinitely) dense matter that has an extremely powerful gravitational effect.
As well, it is believed that black holes emit radiation in a process called 'black hole evaporation'. As the name implies, if this theory is proven true then that would mean black holes do not exist forever.
This is implied by the nature of quantum mechanics itself.
While it is possible for Black holes to merge with other black holes, to form supermassive black holes... it doesn't negate anything we know about black holes.
Also, because of it's massive (possibly infinite) density, there is no way for a black hole to collapse on itself again. At least not in any sense that our reality would indicate.
Instead this is how they are created in the first place, usually through a supernova or collision of stars.. creating an intense mass that collapses after using all of it's 'fuel'. Eventually this mass will form a singularity and curve space-time itself.
So (this is my own theory based off of the poster's theory in which I am replying) if a black hole were to 'create another big bang', it would probably do so when it is formed... and therefore the 'White Hole', is actually a 'Big Bang' formed from the creation of a new universe through means of a black hole.
However, if it is proven that black holes do emit radiation and eventually dissipate, like it is believed that they do, the creation of a 'big bang', or even 'White Holes', are unlikely theories.
You pretty much summed up what I said in my last post with more detail, but I'd just like to expand on what you said here. A whole black hole with infinite density is impossible, so I think you mean the singularity, because for infinite density there would have to be infinite mass if the volume is definable enough, as for black holes.
That's not exactly true...
Because of the nature of singularities, they are thought to have an infinite density, because the entire mass of the singularity is within one point, and therefore has no radius and no volume.
However, mass of the object is not infinite, it simply occupies a single point within space-time.
This is a quote from Wikipedia:
Link: http://en.wikipedia.org/wiki/Black_hole#Singularity
Also, going back to add to my last post... if anyone is curious what the differences are between the 'Big Bang', black holes, and white holes... I found this very informative site: http://www.weburbia.com/physics/universe.html
It also explains how the 'Big Bang' and white holes may be related... although, that is not the currently accepted view by scientists.
Makes me feel much more important.
Quite the wall of text, though, hm?
An interesting thing about Black Holes when they emit GRB's.
This image depicts a Gamma Ray Burst. These burst can last anywhere from milliseconds to a few minutes long, usually a few seconds though. These GRB's emit as much energy as the Sun does in its lifetime in just a few seconds. Most observed GRB's are seen in or outside the Milky Way Galaxy as far as I know. Scientist have speculated that the end of the Earth will be caused by a GRB directed at Earth. If Earth was in the path of one of these GRB's it would be like getting Nuked in a microwave times 1,000,000. I guess it depends how far away the GRB originated, even at 1,000 light years away. Who knows how far, but say even at 1 million lights years away don't you suppose the radiation would still kill us over time?
I was talking about black holes themselves not being able to have infinite densities, not their singularities. Maybe I'm just being too critical with words here...
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Retired StaffWell I thought that was obvious but apparently not. I meant that Black Holes are basically cosmic vacuum cleaners, not that they use actual vacuum. As for the rest of your post that I cut out, it was an interesting read. I had no idea that Black Holes slowly died which means that something is able to escape the hole or is the radiation created at the event horizon? Because if light is matterless then why do radiation escape if not that it is created at the event horizon or that light does have some form of matter in it.
Venit, quessit, induravit.
I have not learned of any water-covered exoplanet discovery. Do you know any sites or articles related to it?
Read my post again, I have some more information!