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(io9)   At last: A black hole you can visit... and survive   (io9.com ) divider line
    More: Interesting, black holes, Event Horizon  
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5682 clicks; posted to Geek » on 02 Nov 2013 at 1:11 AM (3 years ago)   |   Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



47 Comments     (+0 »)
 
View Voting Results: Smartest and Funniest
 
2013-11-01 09:41:52 PM  
So if a black hole collapses to a singularity it would also have an infinite spin?
Or would the spin prevent it collapsing until the spin leaks away?
 
2013-11-01 11:39:59 PM  
Subby's mom?
 
2013-11-02 01:19:06 AM  
www.examiner.com
Sheryl ready boys!
 
2013-11-02 01:35:20 AM  
Heh, for a second I thought they were talking about my checking account.
 
2013-11-02 01:37:01 AM  
Um...

I'm no physicologist, but if you had enough spin for rotational forces to counteract the gravity not just enough to neutralize it but to create a hole in the center... wouldn't the ring have to be rotating faster than light speed in the first place?
 
2013-11-02 01:38:56 AM  
Pamela Anderson?
 
2013-11-02 01:54:54 AM  

Bucky Katt: Heh, for a second I thought they were talking about my checking account.


Then you got to the part about "and survive", amirite?

/don't feel bad.  i don't even have a checking account, i have to envy yours
 
2013-11-02 01:59:16 AM  
Pretty sure the radiation would still kill you.
 
2013-11-02 02:27:48 AM  
What a total clickbait headline. Made it sound like someone had actually found a wormhole within reachable distance of Earth.
 
2013-11-02 02:35:25 AM  
About damn time, I've been going grey waiting for this...

i.imgur.com
 
2013-11-02 02:59:14 AM  
Carl Sagan already thought of that one.

scifiportal.eu
 
2013-11-02 04:02:15 AM  
Sadly, your mom was not one of these.
 
2013-11-02 04:10:01 AM  
I'll go with c) Subby's Mom
 
2013-11-02 04:13:18 AM  

Animatronik: Sadly, your mom was not one of these.


OBBN: I'll go with c) Subby's Mom


CURSES!!!! Beat me to it.

//Totally not mad
/Maybe a little.
 
2013-11-02 04:29:06 AM  

Hiro-ACiD: About damn time, I've been going grey waiting for this...

[i.imgur.com image 400x293]


Yeah, I was gonna say, send Maximilian first.
 
2013-11-02 04:49:32 AM  
I'm gonna hold out until they put a restaurant there so you can watch.
 
2013-11-02 06:07:17 AM  
that'sracist.jpeg
 
2013-11-02 06:32:31 AM  
Subby's mom.
 
2013-11-02 07:38:47 AM  
i1282.photobucket.com
 
2013-11-02 08:10:55 AM  
FTFA: This is the point at which they go dark, because it requires so much energy to escape them that not even light can get away.

*sigh* Black holes do not work like that.

But since this is io9, I suppose it's no surprise that their description of a Kerr black hole comes off sounding like the premise to the most generic SyFy movie ever: full of scienty buzzwords like "portal", meaning nothing.
 
2013-11-02 08:25:16 AM  
The Xeelee would like a word...
 
2013-11-02 09:55:22 AM  
Wow, news from 1963 is so exciting!
 
2013-11-02 10:11:24 AM  
What's on the other side? A lot of people have wondered. Some people think that these kind of black holes might be our key to time travel. They might be wormholes that let us hop between different points of the universe. Or they might be portals to different universes entirely. First we'll have to find a few, and then we'll need a few volunteers to go through. Preferably ones that haven't seen Event Horizon.

That's assuming that this particular type of black hole actually exists. And there is an other side to the black hole. And that time travel actually exists. And that wormholes exist. And a whole lot of other things as well.
 
2013-11-02 10:42:39 AM  
2 problems: First, if there is any matter accreting to the black hole it will be so hot it will be throwing off lots of radiation. The other is that you be heading straight into its rotational axis and thats where black holes eject all the really nasty stuff.
 
2013-11-02 10:57:11 AM  

czetie: FTFA: This is the point at which they go dark, because it requires so much energy to escape them that not even light can get away.

*sigh* Black holes do not work like that.

But since this is io9, I suppose it's no surprise that their description of a Kerr black hole comes off sounding like the premise to the most generic SyFy movie ever: full of scienty buzzwords like "portal", meaning nothing.


When do the sharks come in?
 
2013-11-02 11:14:43 AM  
I want to see what happens when a regular black hole attempts to pass through the empty space of a black ring-hole.
 
2013-11-02 11:35:39 AM  
And thankfully, not only do we have a reliable FTL drive, our gravitic shielding will protect us.

/and you thought encasing pulse generated quantum black holes in a stasis field had no real applications
 
2013-11-02 11:48:16 AM  

MaudlinMutantMollusk: Subby's mom?


Apos: Pamela Anderson?


OBBN: I'll go with c) Subby's Mom


Came for these, leaving satisfied.
 
2013-11-02 11:54:20 AM  
Would you visit or would you want to stay? As in not go back?
 
2013-11-02 12:01:54 PM  
Kind of like if you were in the middle of a tornado and ended up in the sky?
 
2013-11-02 12:05:00 PM  
Wouldn't you need to have something a little more than a singularity to make this work?  A singularity is a 1D point mass, you'd need a 2D circle-line singularity.
 
2013-11-02 12:42:59 PM  

jamspoon: So if a black hole collapses to a singularity it would also have an infinite spin?


A black hole is a singularity, at least as far as we know. Black holes don't "spin" in the way that a basketball or a planet might spin (what would it mean for a geometric point to "spin"?). However, if material falling onto or collapsing into a black hole has angular momentum (i.e. is spinning), that angular momentum can be imparted onto the black hole, giving it a non-zero but finite angular momentum.

Angular momentum is one of the only three physical properties that all black holes have, the other two being charge and mass. Since you can perfectly describe any black hole with just three numbers, black holes are some of the most "simple" objects in the cosmos!

jamspoon: Or would the spin prevent it collapsing until the spin leaks away?


It is thought that a quickly spinning object (e.g. a neutron star) which would otherwise be massive enough to collapse in a black hole can be prevented from doing so by its spin alone.
 
2013-11-02 01:27:28 PM  

nimbers: I want to see what happens when a regular black hole attempts to pass through the empty space of a black ring-hole.


Game over, man. Game over.
 
2013-11-02 01:29:41 PM  
FTA:  "What's on the other side? A lot of people have wondered."

deathlyart.files.wordpress.com

My guess would be a ball of highly compressed matter.
 
2013-11-02 01:29:55 PM  
www.ihatethemedia.com
 
2013-11-02 01:47:39 PM  
Singularities don't exist in reality; they're just things that tell you your theory is inadequate. Quantum mechanics originally involved singularities, and then physicists invented renormalization to get around them.

Probably black holes are really just balls of quantum strings.

See:
http://en.wikipedia.org/wiki/Fuzzball_(string_theory)
 
2013-11-02 02:04:47 PM  

nimbers: I want to see what happens when a regular black hole attempts to pass through the empty space of a black ring-hole.


Jesus comes back, but only to say, "Okay, seriously, guys, this shiat's getting dangerous."
 
2013-11-02 02:34:59 PM  
I was expecting Sasha Grey
 
2013-11-02 04:58:25 PM  
The same kind of thing can happen in Kerr black holes. Instead of a singularity at the center, there's a ring. And you can go through the open portion of that ring without touching the gravitational crush.

What's on the other side? A lot of people have wondered. Some people think that these kind of black holes might be our key to time travel. They might be wormholes that let us hop between different points of the universe.


Under the parameters described by that situation, what is on the "other side" is precisely that. It's whatever is literally on the other side of the black hole; as in, what you would be looking at if the black hole were not there. Given that the theorized spin has caused the superdense material to coalesce into a ring in the first place, the path through the middle would be clear and permit light transmission anyway, albeit with gravitational lensing.

Now the real noodle baker is there may actually BE no gravitational lensing that that hypothetical situation. Gravitational forces behave very similar to electric/magnetic field forces, with mass taking the place of charge (and no as of yet discovered "negative mass" force to make objects repulse each other. The forces imparted onto a point charge contained within a hollow shell-sphere of charge all cancel out to have no effect on the point charge. It sounds counterintuitive since the closer a point charge(1) gets to a point on the sphere-shell(2), the stronger the attractive/repulsive force between (1) and (2) is, and the weaker the force between (1) and points opposite (2) on the shell get. But since it's a sphere-shell, the closer (1) gets to (2), the more OTHER points on the sphere-shell gain an opposing component to their force vector. The closer (1) gets to (2), the more other points start pulling (1) away from (2). It all cancels out for ANY point within the sphere-shell.

Knock a dimension out of that, and i would expect a uniform ring/toroid of mass would have the same cancelling effect on any point mass inside of it IN THE SAME PLANE. Which means no gravity "inside" the ring, as long as you are in the same plane as the ring. You WOULD experience a (significant) gravitational acceleration as you approach the ring though. As long as you didn't lose momentum along your path through the ring you should be able to slingshot out the other side far enough to escape, but given that the acceleration on the way in would probably result in relativistic velocities through the ring... who the hell knows? Luckily the whole proposal is bullsh*t and we don't have to worry about it.
 
2013-11-02 05:01:52 PM  

make me some tea: Carl Sagan already thought of that one.

[scifiportal.eu image 850x507]


imageshack.us
Disagrees.
 
2013-11-02 06:57:56 PM  
I was expecting the Politics tab, but I can accept Subby's Mom instead.
 
2013-11-02 10:48:28 PM  
So, is that how Jesus came to be? More plausible that way.
 
2013-11-02 10:59:56 PM  
Good description of i09, really.
 
2013-11-03 02:06:34 AM  

make me some tea: Carl Sagan already thought of that one.

[scifiportal.eu image 850x507]


How was the book compared to the movie?  Is it a "based on" movie (The Thing), an "inspired by" movie (Starship Troopers), or a "suggested by" movie (I, Robot)?
 
2013-11-03 02:12:23 AM  

johnny_vegas: [www.ihatethemedia.com image 425x637]


You know, she's finally moved to the west side of Florida, (AKA, the Redneck Rivera) which is where she belongs, really.
 
2013-11-03 08:17:44 AM  

itcamefromschenectady: Singularities don't exist in reality; they're just things that tell you your theory is inadequate. Quantum mechanics originally involved singularities, and then physicists invented renormalization to get around them.

Probably black holes are really just balls of quantum strings.

See:
http://en.wikipedia.org/wiki/Fuzzball_(string_theory)


I'm a fairly intelligent, accomplished person.  I love reading articles like this, but they always make me feel like I've been eating paint chips my whole life.
 
2013-11-03 11:58:21 AM  
Dwight_Yeast:
You know, she's finally moved to the west side of Florida, (AKA, the Redneck Rivera) which is where she belongs, really.

I think you're thinking of Geraldo's less successful cousin, Cletus Rivera.
 
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