Why haven't extraterrestrials made their presence known?

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The temperature inside one of Alcubres gravity waves exceeds the temperature of the sun's corona. What shall we make our star ships out of. Do you know any construction material that can withstand 2 million degrees Kelvin? I don't.

So even if the Alcubre warp effect could be produced (how?) there is nothing that can make any use of it.

ruveyn

http://www.wrongplanet.net/forums-posti ... 21982.html

Considering NASA thinks it's capable of working, I think you are overestimating the requirements somewhat.

I'm just jumping in here and giving my take, since I think about these things alot. I do understand and believe in panspermia, technically some forms of bacteria can infact exist and stay alive in space. At one point or another, bacteria from our planet must have been blown to the moon, and Mars, perhaps further outward. One thing I know, everything is connected. I see the entire Universe is alive, just not sentient but ever-changing and evolving. Continually creating, and destroying. I feel that, we are comprised of some form of alien bacteria/non Earth, but perhaps emerged someplace else in our solar system or galaxy, and made home on Earth. I don't feel space ships visit Earth, or anything like that. Perhaps centuries ago, although it's unlikely without proof. Also I feel that the Universe is like a computer with our consciousness substantiated into it. Our brains are at best - used for information processing. Everything is frequencies that we decode into photons, constructing into solid matter but nothing truly is solid but merely vibrational atoms.

If the technology could get them here,then it would be able to conceal them also.They would just examine us as we examine life forms that we think are more primitive than us.Some where in the galaxy little aliens are watching their version of National Geographic only it's called National Galactic and they really enjoy the primitive antics of the primate species on planet 4892322.

In that case, what the hell was this thing and where did it come from?

If it is a terrestrial craft, please cite your sources as to who built it.

First of all, the Alcubierre drive requires the use of negative energy to which there is no evidence for.


The only way a warp drive can work is a VERY high powered gravitational amplifier. But in order for the spaceship to prevent being crushed into oblivion and then evaporating in a burst of gamma rays, it would need to rotate extremely rapidly and build up enough angular momentum to protect itself from the immense gravitational forces being generated. THAT is how you would create a stable wormhole.

the alcubierre drive isnt a wormhole,

but actually the wholer idea of the new improvement is to rotate the field to create something akin to a the looking glass of alice principle in black holes.
a donut shapen rotating energy field.
as far as i can see there would be no discernible phsyical pressure on the vessel when riding inside the bubble, there is a wake are both inside and outside where there would be immense pressures but ship geometry can account for most of it.

still requirtes a way to manipulate negative energy which we dont have

It has been shown that when the Alcubierre space-time bubble exceeds the speed of light, the resulting hawking radiation would produce such extreme temperatures that the the spaceship would be large enough to disintegrate the spaceship into a plasma of elementary particles as well as causing instability in the bubble itself. It is highly unlikely that negative energy exists whatsoever.

Very neat idea, but it will never work. The wormhole is really the only option and the way to stabilize them is using angular momentum.

One thing people are forgetting - light speed still takes FOREVER to get anywhere. Going double or even triple the speed of light would still be too goddamn slow to go anywhere of astronomical significance.

i do not think anyone is "forgetting" that. the notion of traveling with a linear velocity to a distant destination has long been ruled out by most people who are considering the matter of interstellar travel.

the current ideology (as far as i know (which is not very far)) is to warp the space plane we are on to reduce the distance that needs to be traveled.
if one had a ticker tape a quintillion miles long, then the idea is to warp the tape by bending it over so that the end is just inches away from the beginning, rather than hurtling at impossible speeds in a linear fashion to take trillions of years to get to the end.

in order to bring the destination close by, one would have to create a gravitational force that compresses all that spacial distance into a manageable short hop, and the energy required to do so is not found anywhere in the universe, let alone able to be harnessed.

even super massive black holes have not the influence required to compress an incomprehensible inter galactic distance into a distance that is able to be traversed by ordinary means. there is no energy source in the universe that can cramp the distances in question into the same location that one is already in.

worm holes are impossible. quantum relocation may be the best idea, but whoever is a test
subject to volunteer to take the "journey" would not be able to report whether it was successful unless they "came back" (they are millions of light years away), and that would not be possible because there is no apparatus to enable that return trip available at the destination.

who knows? (i am sure all of you do), but i believe that quantum entanglements of fundamental "pairs" of energy is the only way that one can travel outside time to impossible distances within time.
i have my helmet on.

With what? An angular momentum stabilizer that runs on unobtanium or nosuchthingium?

ruveyn

Handwavium. It will do anything you want it to, as long as you don't try to explain how it works.

you have a sprightly and humerus mind for a 76 year old.

My body only appears to be 76. Inside I am still the same 19 year old mad-man I was 57 years ago. To the mirror I say: "You lie, damn you!"

ruveyn

i have trouble believing you are 76, but i do not consider you to be dishonest. i have never seen a 76 year old person who can out think young people in immediate circumstances.

that is all i have to say and your ego should not prompt you to extend this conversation.

A Kerr black hole is a essentially a space-time tube whose boundary is maintained by a ring shaped singularity. And FYI such an object has been found: Sagittarius A*. I actually saw an article in the last year that astronomers have finally succeeded in imaging its event horizon, confirming that this object is indeed a black hole and the heart of it is a massive hole in space-time 11 million miles wide. What prevents Sagittarius A* from collapsing to a true singularity is its angular momentum. I have mentioned this in more than one thread you posted in. Despite theoretical predictions that Kerr black holes are too unstable to exist, the observational evidence suggests that objects with such properties really do exist. Schwarzschild black holes however, are theorized to exist and there are several objects believed to be Schwarzschild black holes, but the problem is that this has not yet been confirmed since astronomers have yet to observe an event horizon on such an object(which means that such objects may be compact neutron stars).