New UFO files released in UK

ojrules said:
ok then it isnt "faster than the speed of light"... we're back to wormholes, which are a compeltely untested and unseen(?) phenomena... Blackholes are seen like this weird thing that happens in space, but the basic physics of it isn't that scary or difficult... wormholes are something completely different and largely unrelated to black holes... i may aswell say the invisible magic apple that lives in my fridge enables me to FTL ... its just as a valid argument


"Warping space".. we're back to this again, so you need something reallly massive ( its not about density- some black holes have a similar density to water!!!!), with the energy available to us in this galaxy i don't see it being remotely possible.... because i presume you're talking about " warping space time" beyond what black holes already do...
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FTL in the sense of getting to a point in space faster than it would take for light traveling from the same source to get there. No one says FTL is possible thou and as I said earlier everything in this universe might very well restricted to sub-light speeds. Einstein did put forth a few theories thou that there might be ways around this restriction. Lets hope he was right ;)
 
AcidHell2 said:
Only particles hit by others change direction or interact act. Now in air there is billions of particles so you seem to get a uniform pattern of movement, but is in fact pretty chaotic, with particles going in every direction, just that as there are so many you get most doing roughly the same thing.
In space it is a vacuum, with very few particles. so the interaction is much less and so gives a much less uniform result.
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You're ignoring the issue, of course this is space so an object in motion stays in motion unless another force or object acts upon it, so then how do these 'particles/debris' turn or slow down to a stop and reverse direction?

If a particle seen or unseen hits another then it will generally be knocked off course, not make slow gradual turns, the chances of multiple particles hitting from the right direction to cause that effect are quite unlikely, nothing i've read explains this effect except for perhaps some kind of intelligently controlled object.
 
ojrules said:
wormholes are something completely different and largely unrelated to black holes...

"Warping space".. we're back to this again, so you need something reallly massive ( its not about density- some black holes have a similar density to water!!!!), with the energy available to us in this galaxy i don't see it being remotely possible.... because i presume you're talking about " warping space time" beyond what black holes already do...
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erm, a wormhole is most likely a connected pair of black holes. Definitely NOT unrelated.

and black holes with low density?? wtf are you on? they have to be smaller than schwarzschild radius (for a given mass) and that imposes lower bounds on density anyway!
 
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Amleto said:
and black holes with low density?? wtf are you on? they have to be smaller than schwarzschild radius (for a given mass) and that imposes lower bounds on density anyway!
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wikipedia- "The average density of a supermassive black hole (defined as the mass of the black hole divided by the volume within its Schwarzschild radius) can be very low, and may actually be lower than the density of air. This is because the Schwarzschild radius is directly proportional to mass, while density is inversely proportional to the volume..........Thus, average density decreases for increasingly larger radii of black holes (due to volume increasing much faster than mass)."

BOOM eat that!

Amleto WTF ARE YOU ON ?!
 
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You are making yourself look silly.

You dont know what a Schwarzschild radius is do you?

Do you know what a black hole is?

Do you know what a hole is?

Infact, do you know what the colour black looks like?

You are getting mixed up with the average density accross the raduis of the event horizon, which is NOT the black hole itself.


ojrules said:
Blackholes are seen like this weird thing that happens in space, but the basic physics of it isn't that scary or difficult...
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Blackholes are where spacetime ceases to be, and gravity is infinite and time no longer exists. No one on this planet knows any more than pure conjecture as to what happens inside a black hole.

I suggest you better give Stephen Hawking a call and tell him of your discovery, as you are clearly the world leader in black hole physics.
 
First line of wikipedia article on blackhole. "A black hole, according to the general theory of relativity, is a region of space from which nothing, including light, can escape" .. do not try and patronise me, i studied astrophysics for 6 months..
 
Black Holes are simply where the escape velocity exceeds the speed of light. . Gravity there is not infinate... Don't try and patronism me you arrogant prat...

did you even read my quote on the density of blackholes? you seemed to have ignored that....

The average density of a supermassive black hole (defined as the mass of the black hole divided by the volume within its Schwarzschild radius) can be very low, and may actually be lower than the density of air. This is because the Schwarzschild radius is directly proportional to mass, while density is inversely proportional to the volume. Since the volume of a spherical object (such as the event horizon of a non-rotating black hole) is directly proportional to the cube of the radius, and mass merely increases linearly, the volume increases by a much greater factor than the mass as a black hole grows. Thus, average density decreases for increasingly larger radii of black holes (due to volume increasing much faster than mass).
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Go back under your rock
 
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ojrules said:
Black Holes are simply where the escape velocity exceeds the speed of light. . Gravity there is not infinate... Don't try and patronism me you arrogant prat...

did you even read my quote on the density of blackholes? you seemed to have ignored that....



Go back under your rock
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LOL AGAIN!! You keep coming back for more!

I think you had better call NASA and tell them of your discovery..

read this for a start:-

http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/010912a.html

Actually at the center of a black hole spacetime has infinite curvature and matter is crushed to infinite density under the pull of infinite gravity
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Understand a bit better now?

Thanks for calling me a prat, thats really mature and can only further your already astounding knowledge of the intricacies of spacetime.

It may be better to accept at this juncture that you are effectively clueless, and some reading of basic space theory may be in order.
 
- Yes at the centre density may be infinate, but i am talking about the whole black hole, and if you look, my quotes back this up.... I havn't mentioned space time, i mentioned the density of a black hole.... and then got flamed, and then proceeded to prove you wrong, which you are yet to realise...

Tell nasa of what discovery?... Your quote refers to the singularity in a black hole, not the whole structure.. A black hole is simply where the escape velocity exceeds the speed of light-- you are talking about the centre of a black hole... The overally density of a black hole, can be very low as my wikipedia quote backs up..


anyways im off, enjoy misquoting and flaming me while im gone...
 
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ojrules said:
- Yes at the centre density may be infinate, but i am talking about the whole black hole, and if you look, my quotes back this up.... I havn't mentioned space time, i mentioned the density of a black hole.... and then got flamed, and then proceeded to prove you wrong, which you are yet to realise...

Tell nasa of what discovery?... Your quote refers to the singularity in a black hole, not the whole structure.. A black hole is simply where the escape velocity exceeds the speed of light-- you are talking about the centre of a black hole... The overally density of a black hole, can be very low as my wikipedia quote backs up..


anyways im off, enjoy misquoting and flaming me while im gone...
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Ahh so your just reguritating wiki?

Isnt that what you were accusing everyone else of doing a few posts ago?!

Edit: yes it is!!

ojrules said:
continues my proof some people on here just regurgitate information they have heard from documentaries, without properly studying the subject of astrophysics....
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Case closed fella, busted!
 
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documentaries and wikipedia are not the same... I merely regarded wikipedia as a reliable source to quote... my knoledge does not come from wikipedia it just, as i said, is a useful and reasonably reliable source to quote information from...

^^again - misquoting me... and the only reason why i called you an arogant prat was because you were trying to insult me "do you even know what the colour black looks like"

... case most deffinately not closed, and thanks for trying to get the last word..

after that, i stick by my "arrogant prat" comment

keep to the youtube comment pages....
 
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Davies_M said:
Even now, countries are attempting to militarise space...everything has to give someone an advantage in politics rather than a greater sense of pushing forward for the benefit of mankind.
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No they're not, we all signed treaties saying we wouldn't put weapons in space.
If we'd wanted to militarise space it would have been done by now.
 
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