APOD
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Too Close to a Black Hole [^]. Generated image but probably the best of a few days worth.
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Too Close to a Black Hole [^]. Generated image but probably the best of a few days worth.
Some more spacey links: 'Interstellar' Science: The Movie's Black Hole Explained (Video)[^] Space Engine[^]
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Too Close to a Black Hole [^]. Generated image but probably the best of a few days worth.
Just some questions out of curiosity: 1. How far is the nearest black hole to us? If it comes closer, can our Earth be swallowed? 2. Is there a minimum distance (calculated) between two black holes, for both of them to exist in a stable state? Perhaps no definitive answers exist, but any pointers, suggestions, comments, guess-estimates are welcome. (I don't want to use Google :-))
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Just some questions out of curiosity: 1. How far is the nearest black hole to us? If it comes closer, can our Earth be swallowed? 2. Is there a minimum distance (calculated) between two black holes, for both of them to exist in a stable state? Perhaps no definitive answers exist, but any pointers, suggestions, comments, guess-estimates are welcome. (I don't want to use Google :-))
- Nobody knows for sure (you can't see the buggers directly), but there is one 1600 light years away: http://www.universetoday.com/75723/where-is-the-nearest-black-hole/[^] - and they could be a lot closer. Could it swallow our earth? Oh yes. Easily, once it's tidal forces had ripped the planet to pieces and smearing out into the accretion disk. 2) Not really - the problem is that there isn't really a minimum distance on a "normal" scale as it also depends on how fast they might orbit each other, AFAIK.
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
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Just some questions out of curiosity: 1. How far is the nearest black hole to us? If it comes closer, can our Earth be swallowed? 2. Is there a minimum distance (calculated) between two black holes, for both of them to exist in a stable state? Perhaps no definitive answers exist, but any pointers, suggestions, comments, guess-estimates are welcome. (I don't want to use Google :-))
Amarnath S wrote:
2. Is there a minimum distance (calculated) between two black holes, for both of them to exist in a stable state?
Infinity/Not Applicable or indeterminate. Hawking radiation means that all BHs will eventually evaporate (although over time scales long enough that they'll be the last gasps before the heat death of the universe. Gravitational radiation produced by the interaction of any two BHs will eventually cause them to spiral in and merge with each other (assuming they don't evaporate first). The timescale for the last of these events is also potentially as long as the heat death of the universe. The potential gotcha with this is that depending on exactly what dark energy is/how it works BHs beyond a certain distance will eventually be yanked across the horizon of each others observable universe and be unable to interact again.
Did you ever see history portrayed as an old man with a wise brow and pulseless heart, waging all things in the balance of reason? Is not rather the genius of history like an eternal, imploring maiden, full of fire, with a burning heart and flaming soul, humanly warm and humanly beautiful? --Zachris Topelius Training a telescope on one’s own belly button will only reveal lint. You like that? You go right on staring at it. I prefer looking at galaxies. -- Sarah Hoyt
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Just some questions out of curiosity: 1. How far is the nearest black hole to us? If it comes closer, can our Earth be swallowed? 2. Is there a minimum distance (calculated) between two black holes, for both of them to exist in a stable state? Perhaps no definitive answers exist, but any pointers, suggestions, comments, guess-estimates are welcome. (I don't want to use Google :-))
Amarnath S wrote:
1. How far is the nearest black hole to us? If it comes closer, can our Earth be swallowed?
There probably aren't any at all, so don't bother with the anti-gravity tinfoil hat.
Amarnath S wrote:
2. Is there a minimum distance (calculated) between two black holes, for both of them to exist in a stable state?
Can things that don't exist be said to have a stable state?
Amarnath S wrote:
I don't want to use Google
No problem. Just install Java or Flash.
I wanna be a eunuchs developer! Pass me a bread knife!
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Just some questions out of curiosity: 1. How far is the nearest black hole to us? If it comes closer, can our Earth be swallowed? 2. Is there a minimum distance (calculated) between two black holes, for both of them to exist in a stable state? Perhaps no definitive answers exist, but any pointers, suggestions, comments, guess-estimates are welcome. (I don't want to use Google :-))
Don't worry about black holes instead worry about assholes. If you replace black holes with ass holes you are asking some very pertinent questions. 1. How far is the nearest black ass hole to us? If it comes closer, can our Earth be swallowed? 2. Is there a minimum distance (calculated) between two black ass holes, for both of them to exist in a stable state?
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Don't worry about black holes instead worry about assholes. If you replace black holes with ass holes you are asking some very pertinent questions. 1. How far is the nearest black ass hole to us? If it comes closer, can our Earth be swallowed? 2. Is there a minimum distance (calculated) between two black ass holes, for both of them to exist in a stable state?
:)
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Too Close to a Black Hole [^]. Generated image but probably the best of a few days worth.
Theoretically when you get close enough to a black hole you will be fried by radiation. if you emit a light beam from your position to the outside, the light will be red shifted, because your time has slowed down, conversely all the incoming light will be blue shifted to ultra violet, then gamma rays. (you will probably not see visible light pictures as far as I understood)
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Just some questions out of curiosity: 1. How far is the nearest black hole to us? If it comes closer, can our Earth be swallowed? 2. Is there a minimum distance (calculated) between two black holes, for both of them to exist in a stable state? Perhaps no definitive answers exist, but any pointers, suggestions, comments, guess-estimates are welcome. (I don't want to use Google :-))
1. Most likely is one at the center of our galaxy, so that would be about 50.000 light year if I am right. There might more lurking closer, somewhere in the milky way but I dunno about them... 2. dunno either, but I guess 2 small blackholes could very well gravitate around each other separated only by a few hundred / thousands million kilometers... (earth is 150 million kilometers from the sun, I guess it might have to be 10 times that at least) we already detected star - black hole binary pairs, the smallest black hole being about 10 solar mass it's not that hard to imagine...
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