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comment by am_Unition
am_Unition  ·  229 days ago  ·  link  ·    ·  parent  ·  post: Mystery cosmic radio bursts pinpointed

And we still haven't ruled out that some supermassive galactic nuclei could be wormholes.

Last I heard, we also haven't ruled out the possibility of a small spaceship and people being able to traverse the boundary of a supermassive black hole without undergoing spaghettification.

I just want to be Matthew McConaughey when I grow up. He was made to derive the Swarzchild metric in preparation for the movie role. (no he wasn't)




kleinbl00  ·  228 days ago  ·  link  ·  

I had a lengthy conversation with Geoffrey Landis about exactly this several years back. We haven't ruled out the possibility, but we also theorize that the amount of energy necessary to expand the radius of the singularity beyond "singularity" is of the "consuming stars" variety and that differences in angular momentum between the ends creates energy deficits of a similar magnitude. Yeah, if you can mold black holes like Play-Doh you get to mess around with wormholes. If you don't even know how to contain one, spaghettification.

It's like Dyson Spheres - yeah, theoretically you could do that. Practically, when the denominator of your equation includes "neutron star material" the theory remains theoretical.

am_Unition  ·  225 days ago  ·  link  ·  

    Yeah, if you can mold black holes like Play-Doh you get to mess around with wormholes.

Not just that.

Sorry, favorite thread of mine in a while.

Devac  ·  229 days ago  ·  link  ·  

    And we still haven't ruled out that some supermassive galactic nuclei could be wormholes.

Wait, really? I didn't know that it was even a possibility! Truth be told I would not be surprised if I got it completely wrong, but to my understanding of concepts like Kruskal-Szekeres coordinates it suggest precisely that we can't cross through the black hole's singularity into 'someplace else'. That said, I know that it's just a nifty piece of mathematics until we will get to test it in practice.

They don't know it yet, but I'm going to pester some theorists next week about that. :D

    small spaceship and people being able to traverse the boundary of a supermassive black hole without undergoing spaghettification.

Apparently, that's the currently accepted paradigm. Thanks, I wasn't aware of it. Now I'm wondering about your idea of SMBH diners being on an 'orbit' below the event horizon for extra awesome.

    Matthew McConaughey

Joke about Contact or something else? I've never watched it. I can't put my finger on what it is, but there's something about Jodie Foster that made me unable to watch movies with her.

am_Unition  ·  225 days ago  ·  link  ·  

    ...until we will get to test it in practice.

Actually, I believe it may be a futile thing to approach experimentally. We might try making successively large and larger treks into the gravity well, but at some point, I think the blueshifting of CMB alone might kill people. I'd have to do the calculation, but again, my instinct is that this would favor larger black holes being more survivable, as you'd get less CMB flux at the event horizon (for something of finite size, like the human body). Ya know? Plenty of other problems too, like time-dilation so extreme that the universe ends while you're down there poking around.

    They don't know it yet, but I'm going to pester some theorists next week about that. :D

I'm interested in hearing how this pans out.

    Joke about Contact or something else? I've never watched it. I can't put my finger on what it is, but there's something about Jodie Foster that made me unable to watch movies with her.

Haaaa! I forgot McConaughey was in Contact, as a priest. No, I was talking about "Interstellar", which I somehow managed to enjoy a little.