# Black Holes: Where does the matter go? **URL:** \ **Category:** Factual Questions\ **Created:** [October 8, 2012, 3:12am UTC](https://boards.straightdope.com/t/black-holes-where-does-the-matter-go/637050 "2012-10-08T03:12:10Z")\ **Posts on this page:** 16\ **Page:** 3
**Author:** ![Half\_Man\_Half\_Wit](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/half_man_half_wit/32/21766_2.png) [@Half\_Man\_Half\_Wit](https://boards.straightdope.com/u/Half_Man_Half_Wit)\ **Post date:** [October 13, 2012, 9:11am UTC](https://boards.straightdope.com/t/black-holes-where-does-the-matter-go/637050/41 "2012-10-13T09:11:49Z")
> [@cmyk](#): > > Topology has many different subfields. I know this is very scattered, but bare with me. That depends on what you intend to bare… 😛 ---
**Author:** ![Chimera](https://avatars.discourse-cdn.com/v4/letter/c/8e8cbc/32.png) [@Chimera](https://boards.straightdope.com/u/Chimera)\ **Post date:** [October 13, 2012, 2:21pm UTC](https://boards.straightdope.com/t/black-holes-where-does-the-matter-go/637050/42 "2012-10-13T14:21:39Z")
There’s no time, what does it matter? ---
**Author:** ![Leo\_Bloom](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/leo_bloom/32/10377_2.png) [@Leo\_Bloom](https://boards.straightdope.com/u/Leo_Bloom)\ **Post date:** [October 13, 2012, 2:47pm UTC](https://boards.straightdope.com/t/black-holes-where-does-the-matter-go/637050/43 "2012-10-13T14:47:20Z")
> [@cmyk](#): > > I’m actually contemplating to spend some free time to figure out a concise way to CG animate these ideas/theories. This is the sort of stuff pop-science shows or magazines never attempt to explain or visualize; it’s always umpteen shows watering down these things and stopping just as the physics and geometry of our universe _really_ become interesting. Sounds great. Best of luck to you. ---
**Author:** ![cmyk](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/cmyk/32/3353_2.png) [@cmyk](https://boards.straightdope.com/u/cmyk)\ **Post date:** [October 13, 2012, 9:13pm UTC](https://boards.straightdope.com/t/black-holes-where-does-the-matter-go/637050/44 "2012-10-13T21:13:34Z")
> [@Half\_Man\_Half\_Wit](#): > > That depends on what you intend to bare… 😛 I’m only destined to make myself appear foolish. Really, it’s more that a curiosity of mine that I’m tinkering with in my spare time, being fascinated by gravitational lensing, and how what the underlying curvature in spacetime would produce what we see there. There’s plenty of research out there on this already, especially in the form of relating hyper-spaces and such, using algebraic topology and a myriad of other advanced mathematics. My interest is in merely culling out the parts that seem to jive with what’s observed, at least in GR alone (while keeping QM in mind), and present it visually. > [@Leo\_Bloom](#): > > Sounds great. Best of luck to you. Thanks! But my free time comes and goes, so nothing may ever materialize. But I love doing scientific animation. ---
**Author:** ![Leo\_Bloom](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/leo_bloom/32/10377_2.png) [@Leo\_Bloom](https://boards.straightdope.com/u/Leo_Bloom)\ **Post date:** [October 13, 2012, 9:29pm UTC](https://boards.straightdope.com/t/black-holes-where-does-the-matter-go/637050/45 "2012-10-13T21:29:54Z")
> [@cmyk](#): > > … > Thanks! But my free time comes and goes, so nothing may ever materialize. But I love doing scientific animation. Ditto. PM on its way. ---
**Author:** ![Half\_Man\_Half\_Wit](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/half_man_half_wit/32/21766_2.png) [@Half\_Man\_Half\_Wit](https://boards.straightdope.com/u/Half_Man_Half_Wit)\ **Post date:** [October 14, 2012, 9:26am UTC](https://boards.straightdope.com/t/black-holes-where-does-the-matter-go/637050/46 "2012-10-14T09:26:49Z")
> [@cmyk](#): > > I’m only destined to make myself appear foolish. (I hope you realize that I wasn’t taking a dig at you, merely making a joke about you using ‘bare’ when you meant ‘bear’: I can bear with a lot, but I don’t typically bare myself with random people from the internet…)🙂 ---
**Author:** ![Chefguy](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/chefguy/32/138_2.png) [@Chefguy](https://boards.straightdope.com/u/Chefguy)\ **Post date:** [October 14, 2012, 2:53pm UTC](https://boards.straightdope.com/t/black-holes-where-does-the-matter-go/637050/47 "2012-10-14T14:53:37Z")
Finally! A thread where I understand absolutely nothing that’s being said, but find fascinating all the same. It’s like listening to someone speak in tongues. ---
**Author:** ![cmyk](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/cmyk/32/3353_2.png) [@cmyk](https://boards.straightdope.com/u/cmyk)\ **Post date:** [October 15, 2012, 1:00am UTC](https://boards.straightdope.com/t/black-holes-where-does-the-matter-go/637050/48 "2012-10-15T01:00:29Z")
> [@Half\_Man\_Half\_Wit](#): > > (I hope you realize that I wasn’t taking a dig at you, merely making a joke about you using ‘bare’ when you meant ‘bear’: I can bear with a lot, but I don’t typically bare myself with random people from the internet…)🙂 :smack: I think that typo was beyond my cognitive event horizon. 😉 ---
**Author:** ![ianmacwilliam](https://avatars.discourse-cdn.com/v4/letter/i/58f4c7/32.png) [@ianmacwilliam](https://boards.straightdope.com/u/ianmacwilliam)\ **Post date:** [October 15, 2012, 1:53pm UTC](https://boards.straightdope.com/t/black-holes-where-does-the-matter-go/637050/49 "2012-10-15T13:53:04Z")
White holes are similar t black hole but they spew out matter and nothing can enter them! could it be the other end to the black hole … same as a one way street so to speak? ---
**Author:** ![Exapno\_Mapcase](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/exapno_mapcase/32/1051_2.png) [@Exapno\_Mapcase](https://boards.straightdope.com/u/Exapno_Mapcase)\ **Post date:** [October 15, 2012, 2:57pm UTC](https://boards.straightdope.com/t/black-holes-where-does-the-matter-go/637050/50 "2012-10-15T14:57:06Z")
> [@ianmacwilliam](#): > > White holes are similar t black hole but they spew out matter and nothing can enter them! could it be the other end to the black hole … same as a one way street so to speak? [White holes](http://en.wikipedia.org/wiki/White_hole) > [@](#): > > A white hole, in general relativity, is a hypothetical region of spacetime which cannot be entered from the outside, but from which matter and light have the ability to escape. In this sense it is the reverse of a black hole, which can be entered from the outside, but from which nothing, including light, has the ability to escape. White holes appear in the theory of eternal black holes. In addition to a black hole region in the future, such a solution of the Einstein field equations has a white hole region in its past.[1] However, this region does not exist for black holes that have formed through gravitational collapse, nor are there any known physical processes through which a white hole could be formed. [url=“[http://www.analbleaching.com/](http://www.analbleaching.com/)”]This is the only known way to get a white hole. ---
**Author:** ![cmyk](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/cmyk/32/3353_2.png) [@cmyk](https://boards.straightdope.com/u/cmyk)\ **Post date:** [October 15, 2012, 7:47pm UTC](https://boards.straightdope.com/t/black-holes-where-does-the-matter-go/637050/51 "2012-10-15T19:47:34Z")
I don’t believe there is any observed evidence for a white hole. Unless, of course, we’re in one. That, or anal bleaching. ---
**Author:** ![Chronos](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/chronos/32/134_2.png) [@Chronos](https://boards.straightdope.com/u/Chronos)\ **Post date:** [October 15, 2012, 11:14pm UTC](https://boards.straightdope.com/t/black-holes-where-does-the-matter-go/637050/52 "2012-10-15T23:14:54Z")
Then, too, even if there were some method for forming a white hole that we’re just unaware of, it’s not like those things are easy to hide. If a white hole existed anywhere within a ludicrous distance of us, we’d see it. But we don’t, ergo, they’re not out there. ---
**Author:** ![iamnotbatman](https://avatars.discourse-cdn.com/v4/letter/i/858c86/32.png) [@iamnotbatman](https://boards.straightdope.com/u/iamnotbatman)\ **Post date:** [October 16, 2012, 7:21am UTC](https://boards.straightdope.com/t/black-holes-where-does-the-matter-go/637050/53 "2012-10-16T07:21:59Z")
It’s worth mentioning that White Holes and Black Holes may be one and the same thing (at least when they are in thermal equilibrium). I don’t think this point is settled, but in basic quantum gravity models (as well as ads/cft) there is pretty strong evidence that you can identify the two solutions. Hawking radiation of black holes is identified with white hole emission, etc ---
**Author:** ![cmyk](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/cmyk/32/3353_2.png) [@cmyk](https://boards.straightdope.com/u/cmyk)\ **Post date:** [October 16, 2012, 5:26pm UTC](https://boards.straightdope.com/t/black-holes-where-does-the-matter-go/637050/54 "2012-10-16T17:26:49Z")
> [@Chronos](#): > > Then, too, even if there were some method for forming a white hole that we’re just unaware of, it’s not like those things are easy to hide. If a white hole existed anywhere within a ludicrous distance of us, we’d see it. But we don’t, ergo, they’re not out there. They could be beyond ludicrous and into asinine. Oh, how I wish those were real units used in astronomy. ---
**Author:** ![smoke](https://avatars.discourse-cdn.com/v4/letter/s/c5a1d2/32.png) [@smoke](https://boards.straightdope.com/u/smoke)\ **Post date:** [October 16, 2012, 7:24pm UTC](https://boards.straightdope.com/t/black-holes-where-does-the-matter-go/637050/55 "2012-10-16T19:24:38Z")
Ludicrous speed! GO! ---
**Author:** ![cmyk](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/cmyk/32/3353_2.png) [@cmyk](https://boards.straightdope.com/u/cmyk)\ **Post date:** [October 17, 2012, 8:38am UTC](https://boards.straightdope.com/t/black-holes-where-does-the-matter-go/637050/56 "2012-10-17T08:38:41Z")
My God… they’ve gone plaid. [Previous page](https://boards.straightdope.com/t/black-holes-where-does-the-matter-go/637050.md?page=2)