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Vacuum Leaks Lead To Another LHC Delay
suraj.sun tips this story at ZDNet about a new problem with the LHC. Quoting:
"The restart of the Large Hadron Collider has been pushed back further, following the discovery of vacuum leaks in two sectors of the experiment. The world's largest particle collider is now unlikely to restart before mid-November, according to a CERN press statement. The project had been expected to start again in October. To repair the leaks, which are from the helium circuit into the insulating vacuum, sectors 8-1 and 2-3 will have to be warmed from 80K to room temperature. Adjacent sub-sectors will act as 'floats,' while the remainder of the surrounding sectors will be kept at 80K, CERN said in the statement. The repair work will not have an impact on the vacuum in the beam pipe. CERN has pushed back the restart a number of times, as repair work has continued. To begin with, scientists said the LHC experiment would restart in April 2009. In May, CERN [said] that the restarted experiment could run through the winter to make up some of the lost time."
This is like Duke Nukem Forever all over again.
History might not repeat itself but it sure does rhyme.
As someone on the LHC/CMS experiment team, let me be the first to say "Argh."
It's now what, a year behind the schedule they'd set after the explosion? CERN is looking worse and worse.
It's really too bad that the congressional Democrats killed the competing Superconducting Supercollider way back in 1994. It's not just a matter of national pride, really. The world simply can't afford to have only one of these machines. The delays have been a tremendous setback for the species as a whole. We are losing years in the progress of our knowledge of physics, the most important science of them all.
What's worrisome is that these same scientists who can't seem to build this thing without some fatal flaw are the same scientists telling us there's nothing to worry about when they create a black hole.
I predict the collider turns on in 2012.
Why oh why must you abhor a vacuum???
Everybody knows that the LHC will be restarted... when, Dec. 23rd, 2012?
... soon they won't be able to stop them. It will be a hazardous vacuum spill, endangering all the surroundings of the LHC!!
...the delay will mean the world lives on for 2 more months ;=)
;)
Ofcourse, A(H1N1)v will prevent the startup alltogether, as key personnel falls sick at the critical time
Then again, the sudden reappearance of sunspots on the sun probably means the super nova will come before even that happens
Oh no, I forgot to take my pills !
Real physicists have already worked out the equations and have anticipated the results of the experiments at CERN.
Experimental lab techs are the ones who are having setbacks here.
Don't worry your little monkey brain too much. Humans are progressing just fine.
C'mon guys - it's just a leak.. didn't someone put some budget aside for duct tape?
I had a vacuum leak once and in less than 5 seconds my house, instead of just smelling like dog hair smelled like stale month old dog hair in a vacuum bag. I also learned to empty the bag more often.
More music, fewer hits
Particle interactions with more energy than LHC can produce happen in the Earth's atmosphere every day. But outside of a carefully controlled environment with extensive sensor equipment, they can't be studied. The LHC is not about creating energies never before seen on Earth-- it won't do that. It's about doing so in an extremely controlled manner than can be measured and investigated.
E pluribus unum
I'll take the "over" bet on this one. It will not restart successfully until after June 1, 2010.
I want to know where they hid the working LHC at.
* Winners compare their achievements to their goals, losers compare theirs to that of others.
Once it 'works' . . . my guess is something will go wrong with the measuring instruments. There's no reason to think that the base functionality is the only thing flawed. It'll be great to finally have particles fire around the track, collide, and have bad data.
Cutting-edge science uses cutting-edge technology.
Of course it breaks !
But in a few decades these technologies might be ready for industrial uses.
I have discovered a truly marvelous proof of killer sig, which this margin is too narrow to contain.
That sucks.
For an experiment of such magnitude, a delay of a few years is not very important...it's way more important to make the experiment in a good way, above anything else.
so was i.
THL phish sticks
To paraphrase, this guy is in the middle of a flooding city. He repeatedly refuses attempts of others to rescue him, claiming God will save him. He drowns, winds up in Heaven, and asks God why he didn't save him. "I sent you a two boats and a helicopter..."
So I can see God now using his mighty and flagellant tendrils to tinker with the LHC's inner workings and yet we still press on, thwarting his every attempt to save the planet Earth and the life he created. I'm certain this will all end with a, "Okay, power it up!", followed by a surprisingly brief sucking sound as the world is drawn into a black hole of its own making.
I can just see the look on his face...
If you start a small firework rocket, you can't predict how far up it will fly and when exactly it will blow up in a shiny and entertaining explosion. But you know the limits of that rocket, e.g. it won't fly up more than 200 feet, the light of the explosion won't last longer than 10 seconds and it won't get hotter than 150 degrees celsius in the center of the explosion (numbers completely made up by me).
The scientists know that the black hole and anything else that may come from LHC won't destroy the world. They also have clear expectations about what they will see, based on what they know about science. But they can't predict 100% what exactly will happen and what new particles will be created, just like a fireworks producer won't be able to tell you how exactly the explosion of the firework will look, just stuff like "it will look like a red heart".
Shooting that firework rocket may point out weekness in design or understanding of explosives involved, just like the LHC may point out flaws in the understanding of physics.
This is a giant multi-national project with funding from multiple governments. I'm sure there was plenty of politics and bureaucrats involved, not just a bunch of over-ambitious engineers trying to build the most complicated things they could dream up.
One time I threw a brick at a duck.
Why nobody was able to find any alien civilizations yet ?
That's because of a number of factors.
If present science are so sure about all possible consequences of creating black holes using Large Hadron Collider or any collider that size, than why any expirements needed ?
Because for a hypothesis to become a theory, it must be tested. That's how science works.
How people that are not "against science" can guarantee any HollyDolly mother, that she's childs are in safe place
There is no such thing as absolute safety. Your "1%" chance enormously overestimates the chances of a black hole swallowing the earth. We're not talking about a pea sized black hole (which would have a mass as great as a mountain), but an infinitessimal mass measuring the same as a few atoms, at most.
Information can enter black hole but can't escape.
See, the problem is calling these tiny singularities "black holes". Wikipedia's definition of "black holes" excludes these things. There is a vast difference between a gnat and an elephant, even though both are animals. There's no magic about black holes swallowing light; in space an object must have enough mass to collapse on itself to create a black hole, if I remember correctly it's about the mass of a thousand suns.
You have far more dangerous things to worry about, driving your kids to the store for instance.
Further reading about black holes. Further reading about the LHC. Further reading about Micro black holes
Free Martian Whores!
Instead of being smaller and useful, it's just a gigantic waste of money
We already did smaller. The LHC, when it comes on line, will be far more useful.
Free Martian Whores!
They're not vacuum leaks, they're gateways to another universe. Plug'em soon before Aliens start oozing out !
This is why movies have producers. It's to keep the artists in check. Someone should have kept the brains in check when they designed this thing. Instead of being smaller and useful, it's just a gigantic waste of money -- the Waterworld of the scientific community.
Yes, and we should dismantle Hubble and replace it with an army of hobbyist astronomers with a 100$ telescope. They won't find anything new except maybe a few near-earth asteroids, certainly no exoplanets and all the other interesting stuff happening. Same with LHC, if you wanted any particle accelerator I think we had an electron one in high school science class. We could play with it forever but I doubt we'd ever get any more results on the standard model and the higgs particle. Experimental science of this kind is all about building the most sensitive equipment you can - it's complex, expensive, obsoleted by the next generation but it's the only way to do science and not guesswork.
Live today, because you never know what tomorrow brings
Large Hadron Collider: Understanding The Dangers (Part 3) The end note there: This "safety review" is a political PR document, not real science. http://deepthought.newsvine.com/_news/2008/09/05/1831610-large-hadron-collider-understanding-the-dangers-part-3
Couple of things - this wasn't redundant when I wrote it - by the time I had come back to the main thread two other people had mentioned it. I *did* actually check first - I hate being redundant. Secondly, if you read the moderation recommendations, you are supposed to use mod points in general to mod up. If I see something redundant, I don't waste mod points on it, I simply don't mark it up. Simple really. Think about it next time.
Nope. It's like Ultra-High-Vacuum applications -- the one single real-world technical application even more frustrating than programming.
(Disclaimer: I am a scientist working on UHV applications, and I am a programmer :-) And I enjoy both. And I'm doing both for a living... Hm. Hang on a minute, I'm just realizing my masochistic tendency... :-p )
You could try some of the books by Frank Close. He's a British author and, while I've heard that some don't like his style, I appreciate it a lot more than Brian Greene - but then I work in the field so I might have a different point of view to a layperson.
the invasion from the Hive will be delayed a few more months. Good! We can look for the Tunnel-Makers' signal a while longer... (http://en.wikipedia.org/wiki/Einstein%27s_Bridge_(book))
Neurowiz
It's exactly the same way, like you, calling self even more anonymously: "Anonymous Coward". Don't take it personally. It's common today. Without that, probably, there wouldn't be other opinions on the net, just political PR ;-)
The explosion happened last September, so it can't be a year behind the new schedule; it hasn't even been a year since the explosion! The schedule set after the explosion was to run again the following September, so it's now predicted to be 2 months behind that schedule
And it's really not too bad, since the SSC was far more overbudget than the LHC has ever been and was being footed solely by the US (whereas the LHC is international). And we're not really losing anything from even a one-year delay. Also, consider the fact that experimental particle physics is but a single aspect of physics, one side of a multifaceted subject.
As for cost, the total LHC cost after 10 years of running is expected to be less than $10 billion total, and that includes the full design phase (greater than 10 years). That means the cost/year is less than $500 million, a drop in the bucket for any modern nation and certainly no problem for CERN's 20 member states and six observer states.
I was at Fermilab yesterday and a video they showed claimed they ARE working with energies never before seen on Earth, as they are smashing antiprotons into protons, both going near the speed of light. Yes, there are higher energy PARTICLES contained in cosmic rays. Perhaps the video, being old, doesn't account for some recent discovery of naturally-occuring antimatter, but otherwise I don't think anything in nature (around Earth) can reach the energy of two high-speed hadrons converting into energy- at least not on the same scale.
I am talking about what Fermilab is doing- perhaps LHC will not be using antimatter but not being familiar with quantum physics I do not know whether the Higgs particle can be formed without the annihilation of matter on the scale at the Tevatron.
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Vacuum leaks? There's vacuum leaking OUT of the LHC?
Holy crap! If this continues that monster could leak enough vacuum to completely cover the entire world, possibly destroying all life on Earth. How long are these madmen going to keep playing with dangerous things like vacuum before somebody puts a stop to it all?
All of science is based on an assumption namely that the laws of nature do not change. You cannot prove that tomorrow gravity will continue to work as it did today. However given that, as far as we can tell, gravity seems to have worked since the Big Bang, it seems a very reasonable assumption that it will continue to work tomorrow.
So saying that things are based on assumptions is meaningless unless you state what those assumptions are and what evidence there is to point out that they are wrong. Otherwise we might make the assumption that the author has no clue what they are talking about...
I think #8 is a bit of a red herring (along with some of the others, but particularly #8). Our complexity or lack thereof does not reduce our value as a data point for determining how life typically evolves in the universe. For that reason alone any one/thing interested in exploration would be interested in us, and other life forms on our planet, the same way we're interested to know if there's simple life on Mars.
https://www.eff.org/https-everywhere
As others have said, we already know that earth-destroying events (black holes, whatever else) can't be created at the LHC because we're still here to talk about the possibility. If the LHC could make an object that destroys the world, then that object would have already been produced by atmospheric collisions and we'd be dead right now.
I really wish I could find this article again, but I remember reading a paper from a couple physicists that offered the possibility that the LHC wont let itself activate because of the risks to spacetime or some other quantum effects. They mentioned previous experiments that posed the same risks have never actually been successful. Damn, anyone know the report I'm talking about? I swear I'm not making it up ;)
You may find my appearance and demeanor foolish, but it is you who plays the fool.
Why nobody was able to find any alien civilizations yet ?
Prime Directive
Of course, if the physics inside the black hole preclude the particle/anti-particle annihilation in step three, then our intrepid scientist will see that the black hole emitted a particle and that its mass INCREASED (by the added mass of the anti-particle).
When our name is on the back of your car, we're behind you all the way!
at least if we believe Walter Wagner: TheDailyShow - LHC
We have never detected a black hole with only the mass of a planet. Such things probably do not exist in the universe. We haven't found any alien civilizations yet because we don't know what to look for and even if we did, we don't have the technology required. I suspect our civilization is unique in its excessively technology-oriented behavior. I doubt many, if any, alien civilizations will ever be transmitting radio signals unless they get that technology from us.
How did you know when you wrote the above, that typing that exact sequence of letters into a computer wouldn't destroy the world? That sequence was probably never tried before. So how did you know. You didn't, but you took the risk anyway, on behalf of all of humanity. There is nothing in our understanding of physics that suggests any more danger to the world from the LHC than there is in that, or any other action. Just because someone comes up with a sci-fi doomsday scenario, whether it's the LHC, 2012, 2000, or the Terminator movies, doesn't make it an actual danger. Just because someone -- or even a LOT of people -- believe something is a danger, does not make it a danger. Those are fictions and fantasies. If there was an actual foundation of the possibility of a risk in physics, that would be a different matter. But there isn't. The only reason why some people assume there to be a risk there is because other people assume there to be a risk there, not from any rational basis.
Actually, physicists have no idea if it will create micro black holes. In a poll of physicists I saw, I think there was a 40/60 split. If black holes are created it means there are more than 4 dimensions, as string theories predict. Either way, the result will have profound consequences for our knowledge. But there are no scenarios under which those black holes would be dangerous.
That is a paradoxical view of black holes. Some may hold that view, but it certainly can't be stated definitively. Most physicists believe that information that enters a black hole gradually radiates out in Hawking radiation.
How dense is matter around these black holes in atmosphere ? What kind of matter is around there ? Is that true for LHC ? Who measured directly any energy that is speculated to collide in atmosphere ?
His comments and criticisms reveal only that he knows very little about particle physics. For instance,
"Obviously, a elementary particle has a predefined shape and size that cannot be adjusted and that leads to an issue with an efficient packing arrangement to create a micro-blackhole"
This makes no sense from any perspective.
His harshest criticism is that we're not certain what the equivalent cosmic ray energy would have to be in order to produce the same center of mass energy as the LHC. He's completely wrong. This is an elementary number that any grad student would be able to calculate given the same conditions.
More fun quotes
"'(d) cosmic rays are incapable of producing micro-blackholes due to the distribution of forces during collision', or '(e) relativistic particles striking non-relativistic particles do not exhibit the same behavior as relativisitic only collisions. "
(d) Wrong, because you can always perform your calculations in the rest frame of either proton and get the same answers. Also, Newtonian physics don't work at these length scales
(e) Wrong again for the same reasons. The difference between fixed target experiments (we've built several) and colliders (LHC) are well understood, and at the energies we're discussing the mechanics are nearly identical. The real difference, that the particles are produced closer to rest in the LHC, is already mentioned in the LHC design documents
http://arxiv.org/PS_cache/arxiv/pdf/0707/0707.1919v3.pdf
Computer Science is all about trying to find the right wrench to bang in the right screw. -T.Cumbo?
In other words, gravity has saved us from gravity. Great.
Nerd rage is the funniest rage.
I'd figured my finances based upon the world ending some time this summer. Now I'm going to have to figure out what to do with all those credit card bills I've been ignoring.
Have gnu, will travel.
Can't give any references right now, as it was a documentary on TV some days ago about the building of ATLAS (one of the two big particle detectors at LHC - maybe their homepage atlas.ch has more info about it).
They showed that the detector was tested before the rest of LHC was ready (and before the first particles were sent circulating through the pipe), by measuring the (often cited) particles that are bombarding earth from space as they travelled through ATLAS. So I'd guess that ATLAS, CMS and other (older/smaller) particle detectors are/were capable of measuring the energy of those space particles just fine, even if they weren't setup to specifically do that.
I think there probably is a fair chance that a civilization might not be interested in us. For instance, ants are quite interesting to a wide range of biologists, but the colony of ants living under the tree on the North side of your back yard are not of particular interest to biologists.
Nerd rage is the funniest rage.
What if the reason all these problems are happening is that people from the future are coming back in time to stop something bad happening in the future. Just like in terminator!
After an authoritative-sounding bunch of complete nonsense you say: but not being familiar with quantum physics...
Well, given you know you aren't familiar with it, why are you telling us what kind of experiments are going on in it?
It is possible, perhaps, that not being familiar with the subject matter you completely misunderstood the PR hype from Fermilab, which certainly does not produce collisions with energies that are anywhere close to what is happening in the atmosphere every day?
Either that, or every competent physicist who has rightfully dismissed the murderous idiocy of the "LHC's gonna make a black hole" crowd is wrong.
I am familiar with quantum physics, and with human psychology, and I know which of those possibilities seems more plausible to me.
Oh, and as it happens, cosmic ray showers do contain a significant fraction of anti-matter, so your whole speculation about that is completely irrelevant, based on nothing but your admitted ignorance of the subject matter.
Finally, I don't know anything about horse racing, but I think the Kentucky Derby is a threat to humanity. See, horses don't run that fast around ovals in nature, so we really can't possibly predict what will happen. And horses have been getting faster and faster due to scientific training methods, so each year new records are set, and there's a risk that when the average speed exceeds 33 1/3 mph there will be a quantum correlation that will cause an equine bose condensate that will result in all the horses in the world suddenly taking on the same velocity, resulting in the destruction of the Earth.
Even though I don't know anything about horse racing I think you should take this threat seriously because it is a) scary and b) stupid, and that's apparently the kind of thing you take seriously.
Blasphemy is a human right. Blasphemophobia kills.
Yes, right now the tevatron at Fermilab is superior to the LHC, and it's half as big as your 12 km and most likely as complex as the LHC. It may in fact be years before the LHC comes on line, but I have no doubt that it will come on line.
The LHC will tell us things that the Tevatron can't when it does come on line. It will be well worth the wait.
Free Martian Whores!
You're missing a vital point. The exact same interactions can be achieved in proton-proton or proton-antiproton collisions. The Higgs, if it exists, can most certainly be produced in the LHC's proton-proton collisions, and high-energy cosmic ray particles can indeed produce collision energies higher than either the LHC or Tevatron can. The key point is that protons (or anti-protons) are NOT fundamental particles. As you probably know they are made up of quarks and gluons. What you may not know is that on the energy scales of these collisions it is not meaningful to say that a proton is made of 3 'normal matter' quarks (2 ups and 1 down). It contains these 3 so-called valence quarks as well as a 'sea' of gluons, other quarks, and - importantly - ANTI-quarks, all collectively referred to as 'partons'. When 2 protons collide in a high energy collision, what is REALLY colliding is either a pair of gluons (one from each), or a quark from one proton and a sea ANTI-quark from the other. The lesson to take away is that even in 'normal-matter' hadron collisions - in the LHC or from cosmic rays - it is still matter-antimatter annihilation at work. A last note: You may easily wonder WHY then the Tevatron collides protons and antiprotons while the LHC uses only protons. Since in the first case there are valence anti-quarks in one of the colliding particles, it is more likely that any given collision will give you the high-energy release wanted (not every collision does!). It is, however, much easier to produce protons than anti-protons! The LHC's approach is to simply produce many, many more collisions per second - easier to do with just protons. The result is more of the desired high-energy events per second than would be attainable with the limited supply of anti-protons.
Your "1%" chance enormously overestimates the chances of a black hole swallowing the earth.
Glad to know we're safe from the black hole, but what of the Fry Hole?
Were you saying something similar from 1961 through 1968?
After an authoritative-sounding bunch of complete nonsense you say: but not being familiar with quantum physics...
Reading articles on wikipedia, written by college dropouts, doesn't put you at any higher level than he is.
every competent physicist who has rightfully dismissed the ... "LHC's gonna make a black hole" crowd
The point of the LHC is to make a black hole. Physicists claim it will dissipate quickly enough from the Hawking radiation vs. whether it will begin snowballing out of control. NOT whether it will create one. You don't even know what you're talking about.
I am the richest astronaut ever to win the superbowl.
> We have never detected a black hole with only the mass of a planet. Is the black hole is something static ? Why it should have the same mass, if it tends to increase it enormously over the time ? Any mass that is around black hole tends to join it forever. I' think "the static" is understanding of nature for some of us.
Well, I'M not safe from the black hos or the white ones, since my favorite bar is in the ghetto.
Free Martian Whores!
One thing I've never understood about this explanation is that it doesn't explain why it's always the anti-particle that falls into the black hole. Wouldn't chance dictate that half the time it will be the particle, causing the black hole to take on the extra mass?
(I'm sure the answer to this question is somehow related to a similar question that I've always had... and that is: why is the universe composed almost entirely out of matter rather than being a mix? and why aren't there any anti-matter black holes?)
that sucks ...
Local Safety Nazis must be involved, I bet someone found the MSDS for vacuum.
The Eschaton is merely working retroactively to prevent causality violations. Clearly, they've inadvertently created a time machine.
JADBP
No. There's a huge community of folks here that very badly want the LHC to get going. Fermilab is a center for computing for the CMS experiment in the US.
going for a complete vacuum might damage the hardon. i say -10psi is enough.
--- widget evolution: enhanced, plus, super, ultra, extreme, exxxtreme, ultra-extreme,
I stated I heard information that I found contradictory. I figured if my understanding is correct, it adds to the discussion. If I am wrong someone can clarify and we get some informative posts, adding to the discussion. The video mentioned antimatter hadn't existed since the Big Bang- I didn't know if that was said for simplicity's sake or if it was then believed true. I didn't want to spend half the post how I'm not sure about this or that, so I made it clear I don't mean to be authoritative and left it. I don't care to play the "I know more than you" game.
My webcomic
That's not really a good metaphor because it implies similarity between all colonies. If the ants in your backyard were demonstrating a behavior different than any other ants studied, then a biologist would certainly be interested.
Really, regardless of the starting assumptions, someone would be interested in us, if they exist:
1) If we assume that Homo Sapiens exist on other planets (colonies) that are identical to us, then those people would be interested in us, and the super-intelligent species is irrelevant. If the extra-terrestrial species is not interested in us, then they're not identical, and we are exhibiting unique behavior, which means the super-species would be interested in us.
2) Homo Sapiens do not exist on other planets, so we are unique, and the super-intelligent species would be interested in us, and the non-existant extraterrestrial homo-sapiens are irrelevant.
Any way you slice it, disinterest is very unlikely to be a factor.
I pretty much agree with the first five entries of your list though, and would add the possibility that we are the first intelligent species to arise in the galaxy, and perhaps the universe. Really, we have very little data. We don't have any idea what the odds of life are, let alone the odds of intelligent life, or advanced intelligence including the use of tools and symbols, storing and harnessing energy to perform work (aside from bodily processes), etc.
https://www.eff.org/https-everywhere
Not my list.
It is at least possible that a super intelligent species has noticed us and classified us as boring. Think millions of unique data points, not 10. How possible isn't very interesting, as no accurate estimate is within reach.
Nerd rage is the funniest rage.
Think about what it takes to work on that thing. It's in a long underground tunnel of rather small diameter for what's in there. Fixing stuff in place is difficult and hazardous. Removing a magnet involves disconnecting everything (a big deal; some of the connections are welded and superconducting), lifting the magnet onto a narrow carrier that runs on the walkway (no idea how that's actually done) and inching the carrier for kilometers to one of the two big vertical shafts where it can be hoisted out vertically. As an underground maintenance job, this is not fun.
The canceled American SSC was designed with a larger tunnel diameter. The LHC was designed with the assumption that not much magnet maintenance would be required, which cut costs but turned out to be a bad assumption.
No, you don't know what you're talking about.
The point of the LHC is to demonstrate the existence of the Higgs boson. Any microscopic black holes created are purely incidental.
It's sad when choosing an installation directory on your own qualifies you as an "advanced user."
Looking at the cosmic ray particle spectrum (google 'cosmic ray spectrum') one can see stuff at 10^20 eV, that is a lot higher energy than the couple of TeV these particle accelerators achieve (no mean feat). Here's a list of some observatories that look at cosmic rays:
Pierre Auger Observatory : http://www.auger.org/index.html
HESS : http://www.mpi-hd.mpg.de/hfm/HESS/
MAGIC : http://magic.mppmu.mpg.de/
Icecube http://icecube.wisc.edu/
One thing I've never understood about this explanation is that it doesn't explain why it's always the anti-particle that falls into the black hole. Wouldn't chance dictate that half the time it will be the particle, causing the black hole to take on the extra mass?
It doesn't matter. I tried to convey that with the "God playing dice" step. However, I think that people explain it with the particle leaving and the anti-particle falling in because particles are easier to understand and they're more comfortable with thinking of a black hole as filled with regular matter.
a similar question that I've always had... and that is:why is the universe composed almost entirely out of matter rather than being a mix?
Physicists also wonder why. It's one of the great unanswered questions. My personal guess is that there are regions of the universe where things are all antimatter, and the whole thing balances out to zero.
why aren't there any anti-matter black holes?
Who says there aren't? There's only three discernible qualities of a black hole: mass, charge, and angular momentum. Since both matter and antimatter have mass, charge, and angular momentum, there's no way of distinguishing an anti-matter black hole from a normal-matter black hole.
When our name is on the back of your car, we're behind you all the way!
>>If you start a small firework rocket, you can't predict how far up it will fly and when exactly it will blow up in a shiny and entertaining explosion. But you know the limits of that rocket, e.g. it won't fly up more than 200 feet, the light of the explosion won't last longer than 10 seconds and it won't get hotter than 150 degrees celsius in the center of the explosion (numbers completely made up by me).
>>The scientists know that the black hole and anything else that may come from LHC won't destroy the world.
Let us not forget though that every now and then one of those little bottle rockets goes astray and ends up exploding in someone's personal space. Eyes get lost, etc.
So even though we know that said rocket can only go 200 ft up, and can only burn at 150 C, when it does misbehave it usually ends up causing some amount of trouble.
Think about it.
Huh?
How could it not be redundant? Your first 5 words were "I have said this before" ;-)
We hope your rules and wisdom choke you / Now we are one in everlasting peace
Why nobody was able to find any alien civilizations yet ?
I think it's because high intelligence is apparently rare. It only evolved once on our planet, out of millions of species. There's probably plenty of life out there, just very little intelligent life.
The video mentioned antimatter hadn't existed since the Big Bang- I didn't know if that was said for simplicity's sake or if it was then believed true.
I'm sure they meant in quantity as in there are no longer atoms composed of antimatter around; there is plenty of subatomic particles of antimatter.
Apocalypse Cancelled, Sorry, No Ticket Refunds
Your assuming that a mini-blackhole created on Mars wouldn't be more dangerous if it hit the Earth than a mini-blackhole created on Earth would be; Marvin the Martian could be looking through his Acme catalog for a LHC right now!
Apocalypse Cancelled, Sorry, No Ticket Refunds