Astronomers have found up to 35 black holes in Andromeda galaxy - Polidicks

Black Holes are just heavy objects with a really small size, why is everyone so crazy about them, you could easily replace the sun with a black hole and nothing would change inside the solar system. (Except freezing to death)

[QUOTE=TorashVD;41251695]Black Holes are just heavy objects with a really small size, why is everyone so crazy about them,[/QUOTE] Because they are not well understood and push physics to its limits. No one cares about the far-field effects of black holes. It's the event horizon and singularity that are interesting.

[QUOTE=Noth;41246242]Does black hole + white hole = wormhole?[/QUOTE] Call it the Oreohole

[QUOTE=TurboSax;41248096]It's somewhat depressing that it's such a massive universe out there, and that we're such tiny living specks on a single planet orbiting a single star in a single galaxy, unable to ever truly see and comprehend it all. It's also saddening to think about how, thanks to our own petty bickering, we possibly may never leave pthe proverbial cradle, and step forward unto the vast stars as we wish we could now. And yet, we're also more powerful and important than all of that, as organic, thinking life in what appears (in our limited vision) to be a dead universe of rock and stardust. As fish who not only have learned to rule over and control the pond they were born in and likely will finally die in, but also to see out of the water and into the vast, inhospitable, and beautiful existence that lies so impossibly far outside their reach and yet so painfully close. Sorry, I apparently get all poetic and such when tired.[/QUOTE] Nah we're pretty great. The most complicated thing we know of in nature is the human brain. That's awesome. We just got TOOOONNNS of leg room up in space is all for when we set for to conquer the universe

[QUOTE=TurboSax;41247474]I just thought about something. What if, instead of the centers of spiral galaxies like ours being supermassive black holes like some people think, they're actually white holes spewing forth new matter in an endless spiral pattern? I mean, think about it, the centers of spiral-shaped galaxies like the Milky Way are [URL="https://www.google.com/search?q=galaxy&rlz=1C1CHFX_enUS454US454&source=lnms&tbm=isch&sa=X&ei=ScPPUbPKNozG9gTV7oGABQ&ved=0CAkQ_AUoAQ&biw=1366&bih=653#rlz=1C1CHFX_enUS454US454&tbm=isch&sa=1&q=spiral+galaxy&oq=spiral+galaxy&gs_l=img.3..0l10.10675.12010.0.12376.7.7.0.0.0.0.87.415.7.7.0...0.0.0..1c.1.17.img.5LDZvXiv5v0&bav=on.2,or.r_qf.&bvm=bv.48572450,d.eWU&fp=1d95e5c3e84ae4e4&biw=1366&bih=653"]seriously fucking bright[/URL], which would make sense if they were spewing endless streams of (possibly white-hot) new matter. Mind you, I know fuck-all about the science behind such things, but it'd certainly explain where the white holes are hiding and where all that consumed matter from black holes goes. Under this assumption, if a galaxy's black holes connect to its central white hole (unlikely, but bear with me), they'd be the horrifying, physics-raping, galactic-scale equivalent of those damn "return to start" squares in every board game ever.[/QUOTE] Massive stars tend to lose angular momentum when they come close to lighter ones (can't find a source right now), so I suppose it's mostly due to all that gas piling up near the centre. The central black hole (or rather the matter falling into it) can emit energy too (and an enormous amount at that, it can outshine the rest of the galaxy and produce ridiculously huge jets glowing from synchrotron radiation), but ours isn't active at the moment. If it was we would have an even more interesting looking night-sky, and probably free energy and/or all be dead.

[QUOTE=slayer20;41245825]What if we're inside a hollowed out black hole that's shrinking. [img]http://www.pitt.edu/~jdnorton/teaching/HPS_0410/chapters/spacetime/collapsing_light.gif[/img] Would such a thing be possible?[/QUOTE] That is actually quite plausible. Our "big bang" could have just been a star exploding in a bigger universe. All the black holes in our universe are more universes. The question here is, "How did this cycle start?"

[QUOTE=DeEz;41246069]according to wikipedia, apparently no an object falling toward the white hole would never actually reach the event horizon how does that make sense johnny help[/QUOTE] idk maybe your ship gets more and more squashed the closer it gets so it can never actually reach it, so white holes are infinitely away from everything else [editline]1st July 2013[/editline] [QUOTE=TurboSax;41247474]I just thought about something. What if, instead of the centers of spiral galaxies like ours being supermassive black holes like some people think, they're actually white holes spewing forth new matter in an endless spiral pattern? I mean, think about it, the centers of spiral-shaped galaxies like the Milky Way are [URL="https://www.google.com/search?q=galaxy&rlz=1C1CHFX_enUS454US454&source=lnms&tbm=isch&sa=X&ei=ScPPUbPKNozG9gTV7oGABQ&ved=0CAkQ_AUoAQ&biw=1366&bih=653#rlz=1C1CHFX_enUS454US454&tbm=isch&sa=1&q=spiral+galaxy&oq=spiral+galaxy&gs_l=img.3..0l10.10675.12010.0.12376.7.7.0.0.0.0.87.415.7.7.0...0.0.0..1c.1.17.img.5LDZvXiv5v0&bav=on.2,or.r_qf.&bvm=bv.48572450,d.eWU&fp=1d95e5c3e84ae4e4&biw=1366&bih=653"]seriously fucking bright[/URL], which would make sense if they were spewing endless streams of (possibly white-hot) new matter. Mind you, I know fuck-all about the science behind such things, but it'd certainly explain where the white holes are hiding and where all that consumed matter from black holes goes. Under this assumption, if a galaxy's black holes connect to its central white hole (unlikely, but bear with me), they'd be the horrifying, physics-raping, galactic-scale equivalent of those damn "return to start" squares in every board game ever.[/QUOTE] well for a start we have observed the black hole in the center of the galaxy the spiral shape of the galaxy is due to density waves through the vast number of stars

what if the the rate of expansion of the universe isn't actually increasing and it's just time itself that is speeding up because as the universe expands the 'background' gravitational force throughout space is becoming less intense because matter is spreading out more which makes time speed up?

I've an interesting theory, if a black hole stretches matter and destroys it and such, what if we sent in a probe that's moving at or near the speed of light into the hole, would it enter undamaged? Of course we wouldn't know, as radio waves wouldn't escape it, but we might learn of it if it exits through a white hole.

[QUOTE=Amplar;41264780]I've an interesting theory, if a black hole stretches matter and destroys it and such, what if we sent in a probe that's moving at or near the speed of light into the hole, would it enter undamaged? Of course we wouldn't know, as radio waves wouldn't escape it, but we might learn of it if it exits through a white hole.[/QUOTE] It still couldn't communicate with us if it exited through a white hole. Like I said earlier, it's only possible for a light beam to make it through a white hole. Although technically that's true for non-rotating, uncharged black holes, but there are paths for massive particles to make it into (possibly infinitely many) new universes via a charged black hole. In that case, though, you still can't communicate with a previous universe.

Johnny, great Cthulhu moderator, is there ever any chance we will ever be able to know these answers and in person explore these things? [editline]1st July 2013[/editline] Is it safe to describe black holes as like yog sothoth and white holes as similar to azathoth?

[QUOTE=Tamschi;41263088]Massive stars tend to lose angular momentum when they come close to lighter ones (can't find a source right now), so I suppose it's mostly due to all that gas piling up near the centre. The central black hole (or rather the matter falling into it) can emit energy too (and an enormous amount at that, it can outshine the rest of the galaxy and produce ridiculously huge jets glowing from synchrotron radiation), but ours isn't active at the moment. If it was we would have an even more interesting looking night-sky, and probably free energy and/or all be dead.[/QUOTE] I thought active galactic nuclei usually released energy perpendicular to the galactic plane. So I don't really see how it would kill us. [editline]1st July 2013[/editline] [QUOTE='[Seed Eater];41265187']Johnny, great Cthulhu moderator, is there ever any chance we will ever be able to know these answers and in person explore these things? [editline]1st July 2013[/editline] Is it safe to describe black holes as like yog sothoth and white holes as similar to azathoth?[/QUOTE] Nobody is visiting a black hole in your lifetime. If I'm wrong I'll mail you $5. You can hold me to that.

[video=youtube;3pAnRKD4raY]http://www.youtube.com/watch?v=3pAnRKD4raY[/video] explains black holes pretty good for people that still dont get it

[QUOTE=Falubii;41265443]I thought active galactic nuclei usually released energy perpendicular to the galactic plane. So I don't really see how it would kill us. [editline]1st July 2013[/editline] Nobody is visiting a black hole in your lifetime. If I'm wrong I'll mail you $5. You can hold me to that.[/QUOTE] I mean ever. Ever. Not in my lifetime, ever. Will we ever seen a black hole? To another universe? Answer is no but I won't accept it until I hear it from a respected fellow who knows their shit.

[QUOTE='[Seed Eater];41265558']I mean ever. Ever. Not in my lifetime, ever. Will we ever seen a black hole? To another universe? Answer is no but I won't accept it until I hear it from a respected fellow who knows their shit.[/QUOTE] Nobody, no matter how qualified, can give you an answer. They can give you an educated guess, but it would still just be a stab in the dark.

it's our job to make the dark smaller

what if you're between two black holes? will there be a point where you tear in two?

[QUOTE=tr00per7;41266458]what if you're between two black holes? will there be a point where you tear in two?[/QUOTE] Not likely, unless the black holes are rather small.

[QUOTE=Falubii;41265443]I thought active galactic nuclei usually released energy perpendicular to the galactic plane. So I don't really see how it would kill us.[/QUOTE] Mostly, but there's X-Ray heat radiation that I don't think is focused. Some of the observed focusing is also due to absorption inside the galaxy, so there's more or harder radiation than we can directly measure.

[QUOTE=Sir M;41245328]What if all the black holes slowly pull eachother together into one super black hole which pulls in the universe, accelerating as it pulls more in, until eventually the entire universe is the size of a pinhead. and it then gets so closely compacted that the force pushing the atoms apart from eachother is greater than the gravity of it all and big bang #n+1[/QUOTE] Or we could all be inside a giant black hole right now, with more black holes in it, with black holes in them.

Did anyone else watch the black hole marathon on Science channel last night? That shit was pretty interesting. Black holes are basically the end of anything and everything in space, but what if they are also the beginning of something else? They gather up so much mass from pulling in everything, and the laws of physics as we know it just completely break down once the event horizon is crossed. What if they are the driving force behind the creation of other universes? What if matter being collected in black holes is meshed into some kind of exotic matter within the event horizon, and instantly spat into being on some other plane of existence... This matter popping up in some totally different place would be like another big bang, and all that matter would "settle" down into the elements that we know of, or maybe even completely different elements, and then boom, another universe is born. So maybe our big bang was simply the result of a random black hole in another universe basically dumping out energy somewhere else, perhaps you could even call it a white hole that existed for a split second. The cycle would continue with the creation of more black holes and each one would be the creator of another universe, and so there would be infinite universes.

[QUOTE=WoodenSpoon;41267644]Did anyone else watch the black hole marathon on Science channel last night? That shit was pretty interesting. Black holes are basically the end of anything and everything in space, but what if they are also the beginning of something else? They gather up so much mass from pulling in everything, and the laws of physics as we know it just completely break down once the event horizon is crossed. What if they are the driving force behind the creation of other universes? What if matter being collected in black holes is meshed into some kind of exotic matter within the event horizon, and instantly spat into being on some other plane of existence... This matter popping up in some totally different place would be like another big bang, and all that matter would "settle" down into the elements that we know of, or maybe even completely different elements, and then boom, another universe is born. So maybe our big bang was simply the result of a random black hole in another universe basically dumping out energy somewhere else, perhaps you could even call it a white hole that existed for a split second. The cycle would continue with the creation of more black holes and each one would be the creator of another universe, and so there would be infinite universes.[/QUOTE] That would be p cool

[QUOTE=WoodenSpoon;41267644]Did anyone else watch the black hole marathon on Science channel last night? That shit was pretty interesting. Black holes are basically the end of anything and everything in space, but what if they are also the beginning of something else? They gather up so much mass from pulling in everything, and the laws of physics as we know it just completely break down once the event horizon is crossed. What if they are the driving force behind the creation of other universes? What if matter being collected in black holes is meshed into some kind of exotic matter within the event horizon, and instantly spat into being on some other plane of existence... This matter popping up in some totally different place would be like another big bang, and all that matter would "settle" down into the elements that we know of, or maybe even completely different elements, and then boom, another universe is born. So maybe our big bang was simply the result of a random black hole in another universe basically dumping out energy somewhere else, perhaps you could even call it a white hole that existed for a split second. The cycle would continue with the creation of more black holes and each one would be the creator of another universe, and so there would be infinite universes.[/QUOTE] What if bro.

[QUOTE=DeanWinchester;41267522]Or we could all be inside a giant black hole right now, with more black holes in it, with black holes in them.[/QUOTE] Yes this is a hypothesis brought up by some books and papers on the matter, though I don't know who was first to state it Edit It is apparently called [URL=http://en.wikipedia.org/wiki/Black-hole_cosmology]black-hole cosmology[/url]

Oh god my brain.

Quick space question guys, I'm not one to believe in UFOs and any other kind of stuff without proof (including religion). I was having a smoke right now, looking at the night sky (3:45 GMT/UTC) and I see this bright flash of light in the general direction of Sirius, it only lasts for about half a second and then goes off, at first I thought I just imagined it so I kept looking and I see it again about 10 seconds later, but it had moved quite a bit. So, I kept watching and it does it again, every time it blinks really bright for half a second then goes off for 10 seconds or so, I lost sight of it when it was in the general direction of Ursa Major because my balcony didn't allow me for a larger line of sight. What the hell was it? My first thought was the ISS or a satellite rotating around in space and reflecting the sun every so often, but I thought those were geosynchronous so it shouldn't be "moving" that fast because it should follow the rotation of the Earth. Or maybe it was the second coming and I may need to find the other two wise men.

[QUOTE=DeanWinchester;41273898]Quick space question guys, I'm not one to believe in UFOs and any other kind of stuff without proof (including religion). I was having a smoke right now, looking at the night sky (3:45 GMT/UTC) and I see this bright flash of light in the general direction of Sirius, it only lasts for about half a second and then goes off, at first I thought I just imagined it so I kept looking and I see it again about 10 seconds later, but it had moved quite a bit. So, I kept watching and it does it again, every time it blinks really bright for half a second then goes off for 10 seconds or so, I lost sight of it when it was in the general direction of Ursa Major because my balcony didn't allow me for a larger line of sight. What the hell was it? My first thought was the ISS or a satellite rotating around in space and reflecting the sun every so often, but I thought those were geosynchronous so it shouldn't be "moving" that fast because it should follow the rotation of the Earth. Or maybe it was the second coming and I may need to find the other two wise men.[/QUOTE] I don't mean this as an insult, but are you sure it wasn't a plane?

[QUOTE=Falubii;41275162]I don't mean this as an insult, but are you sure it wasn't a plane?[/QUOTE] Nah, I'm pretty sure. Planes have two distinct lights (red and green, one on each wing if I'm not mistaken) that blink constantly at regular intervals, even if it was a plane headlight I can't see a reason why they would turn it on really fast and keep it off at regular intervals. What I saw was more like the brightest star in the sky (imagine someone pointing a flashlight right at your eyes, but from really far away) for half a second, followed by 10 seconds of darkness and repeating that over and over again, moving in a straight line.

[QUOTE=DeanWinchester;41273898]Quick space question guys, I'm not one to believe in UFOs and any other kind of stuff without proof (including religion).[/QUOTE] This made me chuckle

[QUOTE=DeanWinchester;41279137]Nah, I'm pretty sure. Planes have two distinct lights (red and green, one on each wing if I'm not mistaken) that blink constantly at regular intervals, even if it was a plane headlight I can't see a reason why they would turn it on really fast and keep it off at regular intervals. What I saw was more like the brightest star in the sky (imagine someone pointing a flashlight right at your eyes, but from really far away) for half a second, followed by 10 seconds of darkness and repeating that over and over again, moving in a straight line.[/QUOTE] Hmm, not sure. Could have been a satellite.