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Post by Deleted on Nov 27, 2010 14:37:29 GMT -5
I'm not much of a scientist, but are black holes at least theoretically just simply pulling things in from around them, and crunching them up into a super massive piece of matter or something?
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Post by Dullahan on Nov 27, 2010 15:20:37 GMT -5
Can we get a physcist here?
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Post by Deleted on Nov 27, 2010 15:27:10 GMT -5
I’ve been reading on it, and it seems like Black Holes are strong gravitational pulls that pull in, and explode every so often. So, if the gravitational pull of things around the black hole get messed up, then it could potentially suck it in, and explode it back out violently.
The weird thing is that some things could actually escape the gravitational pull of the galaxy. Nobody really knows what would happen then. There could be more black holes back out in dark space, or even other universes completely. That’s’ not proved though. You know about other universes.
Basically, there’s a huge black hole at the center of our galaxy (and probably the universe). Then each solar system has a star at the center. The gravitational pull of a star can vary depending on the planets around it.
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Post by takewithfood on Nov 27, 2010 15:30:04 GMT -5
Black holes are just incredibly dense masses - so dense that even light (which acts like a particle) can't escape it's gravity. But they aren't giant eating machines that will one day swallow us all up. From what (little) I understand, black holes have expiration dates. I don't understand the exact mechanism, but it has to do with quantum mechanics (which tends to be about where my amateur interest in physics ends).
The big crunch is only a hypothesis, not a law or theory, and it's on some pretty shaky ground. The more we learn about dark energy, the more it seems that the universe is actually accelerating in its expansion. Basically, empty space isn't really "empty" - there is dark energy in the black, and that energy repels matter. The curious effect of this is that, the more empty space between two objects, the more dark matter there is to repel them - thus, they are pushed further apart, which means even MORE space between them, thus even more repulsion, etc. That's actually a much more frightening idea to me than the Big Crunch. I don't like the idea of the universe being scattered impossibly far away. It's big enough as it is!
~TWF
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Post by Dhark on Nov 27, 2010 16:31:40 GMT -5
I don't like the idea of the universe being scattered impossibly far away. It's big enough as it is! ~TWF I agree, the commute home is a b*tch as it is every Christmas. -------- On a side note, for a good read on Hyperphysics and the theories (they have the math, but I skimmed that because I'm a theoretical kind of guy), and yep Quantum Physics too: Hyperspace by Michio Kaku It's been about five years since I read it last... but it was VERY good, and I'm pretty sure I recall there being a chapter on The Big Crunch. A lot of talk about Black Holes were in there too, including the theoretical life cycles.
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Post by Kaimontfendo on Nov 27, 2010 18:11:46 GMT -5
I don't like the idea of the universe being scattered impossibly far away. It's big enough as it is! Isn't that "The Big Nothing"? Oh, that's all I have to contribute to this conversation. Sorry.
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Post by Dullahan on Nov 27, 2010 18:37:54 GMT -5
Ditto.
Why can't there be any interesting biology discussions? Even if it's just about viruses or something, it could still be interesting..
Biology gets no love.
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Post by takewithfood on Nov 27, 2010 19:19:51 GMT -5
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Post by takewithfood on Nov 28, 2010 19:39:24 GMT -5
No love for the immortal zombie dog sex tumor? Shocking.
~TWF
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Post by Dullahan on Nov 28, 2010 19:48:37 GMT -5
Huh, very odd. I've never heard of cancer that's actually communicable like that. 2000 years old to.
Very strange indeed. I'll say this about biology, it can be a very strange science. And that's one reason I love it.
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Post by takewithfood on Nov 28, 2010 20:51:27 GMT -5
I think my favourite branches of science are astronomy, zoology and psychology. When I was 4, I spent my mornings at a babysitters, watching Carl Sagan's Cosmos and Lorne Greene's New Wilderness (not the best nature show ever, but it was the best I had; if only I had some David Attenborough!). I find psychology sort of morbid, but it's so fascinating.
Ever since I can remember I wanted to be a zoologist, but at some point when I was still pretty little (maybe 8 or 9), I saw a horse kick a farmer square in the chest. The farmer went flying and almost had a heart attack, and I swore off zoology. Animals don't necessarily love me as much as I love them. ^__^ Also, with few exceptions, they smell really terrible. lol
~TWF
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Post by Dullahan on Nov 28, 2010 21:17:44 GMT -5
I've always loved animals, probably from the time I was little. I grew up watching stuff like Stever Irwin, Mutual of Omaha's, stuff like that. And even today, some of my favorite programs are stuff like Blue Planet and Planet Earth. Hence my love of Zoology. And my current major. ;D
But I'm happy admiring from a distance. It's much safer that way.
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Post by Kaimontfendo on Nov 29, 2010 0:05:19 GMT -5
So... it's a tumor that can be passed from one dog to another? I thought dogs could smell tumors....? Discuss.
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Post by Dullahan on Nov 29, 2010 0:07:33 GMT -5
There is some evidence dogs can smell tumors. However, there's little in the way of hard evidence, mostly anecdotal. But even if they can, that doesn't mean they can smell this kind. And since it can be spread by simple close contact, it's not hard to see why it spreads so well.
Also, considering the main method of transmission, I doubt the dog is doing all that much smelling anyway.
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Post by takewithfood on Nov 29, 2010 16:04:45 GMT -5
What's really special about the zombie dog tumor is that, technically, the dogs all have the same tumor. Not a similar tumor, or a tumor of the same type - the same one. And that tumor has been around for hundreds, if not thousands of years.
~TWF
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