User Panel
Yep. At the end of the 19th century, the "death of science" was proclaimed. Everybody thought they knew everything, and it was stupid to enter science because only the details were left. The structure of the atom was known, how the universe worked was known, all that. And then suddenly that stopped being true. Say somthing is impossble, and somebody will do it. Science knows a lot, but it doesn't know everything and the quickest way to look bad is to claim something can't be done. RikWriter is right about us talking about this stuff. It would be like a bunch of guys in 1860s talking about what power plants in 1960 would be like. Kinda hard when you probably can't concieve of "nuclear fission". |
|
|
And at 1st we could only go supersonic in a single seater aircraft.
But if the Speed of Light isn't an upper limit for everything, then there is hope. |
|
So is it conceivable that a few exobytes of massless data can be sampled and recompiled into a complex living object? Why transport matter when you can simply reassemble it in another location? |
|||
|
God told me we are sentenced to remain in our own solar system until we eliminate Democrats and Socialists. Seems he doesn't want to pollute the Galaxy with our trash.
|
|
First we'd have to invent the Heisenberg Compensator, the Pattern Buffer, and the Plasma Phase Coil. But that's easy..... ETA: Oh! Let's not forget the Infinite Improbability Drive. VERY chic! |
|
|
I figured somebody beat me to it! Personally, I think the Bistromath Drive has great theoretical potential. |
||
|
FTL travel may someday be possible, in a thousand years or so. But meanwhile we'll continue to explore and settle space. Mars and the moon being the most ideal outside of the Earth. Which leads to some interesting questions.
1. Say in one or two hundred years, these lunar/Martian colonies may want independence for the Earth. The prospect for a space war is certainly plauslible considering human nature. 2. Space will become dominated by North American/European stock. Not likely too many Haitians will ever find their way into space. Will the UN demand that we share the resourses and riches which we exploit from space, after we bore the cost and risks? 3. If you are born on the moon, will you ever be able to visit Earth? considering you grew up in 1/6 gravity? |
|
Interesting website, I thought it was an Amazon link when I glanced at it before. So, they plan to have the laser travel some number of light-years, bounce off of a mirror going at half the speed of light or so (accelerating it even more) and shine on the rest of the mirror craft to slow it down, maintaining the focus through the acceleration of both mirrors for a year and a half. Sounds a bit unlikely, but I'll give it to them. Meanwhile, 43,000 terawatts That's only 100,000 times the average electric power generation for the entire United States. I don't think we could generate that much power with today's technology even with every person on the planet working on power plants. I'm as optimistic as anyone about the future of the human race, but interstellar travel just isn't going to happen without some major breakthroughs in propulsion and power generation. |
||
|
Mans progress is limited only by his imagination. Unfortunately, his imagination is still confined to thinking inside the box. He will have to evolve more to develop the imagination, and then the solution, to travel to the stars by means not yet imagined. We're too young, but in time...
|
|
[GunnyHartman]
IF GOD WANTED YOU UP THERE HE WOULD HAVE MIRACLED YOUR ASS UP THERE, WOULDN'T HE? [/GunnyHartman] |
|
Sheesh, none of the trekkies in here got my earlier reference.
|
|
A Bussard Ramjet is a solution to your fuel weight problem, though we are a long way's off with this kind of technology. Actually, we have the basic technology already, it's doing it on the scale you would need to power an interstellar spacecraft that is going to need developing. Take a look here: The Bussard Ramjet |
||
|
I haven't run the numbers for that myself, but from what I've read, gathering enough mass to be useful is extremely difficult. Even that site admits that it would take an enormous field to collect much of any Hydrogen, much less enough to use as fuel for rocket engines. Like I've said before, I'm optimistic about us exploring the stars eventually, but we have to make fundamental breakthroughs in propulsion and energy generation before we can seriously think about it. |
|
|
faster than light speed impossible? Only in theory.
but then again i think theory sez that there is a particle that may exist naturaly goes faster than the speed of light. I believe it's called a takion(sp?) |
|
Untill we start thinking about going faster than the speed of light as a beginning point rather than a destination we probably will never even achieve (manned) hypersonic flight speeds.
Nothing is impossible. Great thread! |
|
i got it gunbert, but i just got here tesseracts are the key |
|
|
Power generation... say, what's that yellow thing out there in the center of the system? The one generating googles of terawatts? Oh its the Sun, which generates the yellow band where the source of our strength lies. How hard would it be to arrange a Dyson sphere of sorts to collect and transmit the necessary energy for whatever purpose is necessary? Its not like that would drain it and turn it red. A friend once said to always look for alternatives.
|
|
You're moving in reverse! Any civilization that could build a Dyson Sphere will surely have faster than light travel. They'd have to; there isn't enough matter in our solar system to build a structure that could enclose the sun. |
|
|
Generation ships gentlemen, there lies the answer. If we can't go fast then we will go long.
Fcuk the Sun burning out, asteroids will get us first. Not like it hasn't happened before. |
|
Yes we did! |
|
|
|
|||
|
There is no reason we HAVE to go fast to get to other stars though, nothing wrong with going slow if you can build a craft that can have self sustained life.
|
|
Uh, I fail to see how poining a link to the definition of superluminal proves that we can travel FTL. Tachyons either do not exist or can not interact with matter. If they existed, they would have imaginary mass (square root of negative number) and exist at every point in space time. Quantum entanglement is FTL, but you cannot send mass or information using it. Quantum tunneling has nothing to do with FTL travel, it is a probabilistic concept of how mass can break potential energy barriers given enough attempts. You can go faster then the local speed of light, i.e. cerenkov radiation. But this is splitting hairs and if that was what you were referring to then STFU. |
|||
|
But this is splitting hairs and if that was what you were referring to then STFU.
oh great. there is nothing more fun than watching a couple of steve hawking wannabees get into a cyber cat fight over star trek being real or fake. i'll bet neither of you can set the headspace on a kalashnikov, let alone predict partical behavior. hey...is that a genuine leather pocket protector?!?! j/k...carry on. |
|
RingWorld is easier. |
|
|
The point was, the speed of light was given as a hard limit, and I was trying to show it's not. If there are better ways to show this, please post. |
|
|
Long ago, the core of the Galaxy exploded. The blast wave is heading toward us, and will destroy everything when it arrives.
|
|
Are you kidding? Can you imagine space baseball WITHOUT a Dominican? |
|
|
I thought we were behind the blast front? I thought the universe was still expanding?
|
|
Regarding the experiments that have light traveling faster than c- this is correct, you can have electromagnetic waves at specific frequencies travel faster than in a vacuum. But, you can't use that to send information - to send a signal you have to send more than one frequency (even if it's just a single-frequency pulse, starting and stopping it introduces other frequencies), and in all practical situations the multi-frequency signal will not go faster than c.
There is a discusson at http://www.wordiq.com/definition/Dispersion_(optics) I think colonization of the solar system and beyond is inevitable, given the accelerating pace of technological development. However I think it's a long ways off. I bet it will be 150 years before a human calls any place other than the Earth "home". Maybe 500 years before anyone leaves the solar system. I'd put better than even odds that someone will set foot on Mars during my lifetime though (just barely - I'm 23 now). |
|
We are, and it is. However, this premise is that the black hole at the center of our galaxy has exploded and their is a blast wave from that headed our wave. Think regional event, not universal |
|
|
Tweak - read "Ringworld" (and the other books in the 'Known Universe" series) for an explaination of this idea. |
|
|
Only a Dyson sphere that was perhaps 1 atom thick could possibly be built out of all the known matter in the solar system.
Constructing an artificial sun that lasts 10-20 years would be far easier. |
|
Man, what is your problem? This is a great thread, please don't turn it into a pissing match. |
|
|
I don't believe that faster than light travel is possible. Not everything is "possible" and FTL travel is a far cry from exceeding 30mph in a steam powered vehicle.
Now we may find a way to warp time/space and shortcut thru a wormhole someday but true FTL travel is not going to happen IMO. I'd put it in the same realm as cold fusion. No doubt we need to find other places to reside though. Earth has a finite ability to put up with our abuse and our seeming inability to constrain our population growth. |
|
Personally I think Einstien is full of S**T. It used to be common knowlege that we could never go faster than the speed of sound. When automoblies started to catch on science "proved" that it would be impossible to travel faster than 60 mph because a person wouldn't be able to breath. Flight was impossible, we will never be able to go to the bottom of the ocean, never set foot on the moon, never see an atom, etc. The person most easily convinced something is impossible is a scientist! If we listened to them we'd still be living in caves thowing rocks. DocD |
|
|
Hey, Light! If you want to accept that self limiting speed limit don't expect the rest of us to adopt your defeatist attitude. We will kick your ass in the end.
|
|
Hey, those light bastards are oppressing me! I should be able to travel as fast as I damm well please. Someone call the ACLU!
|
|
Interesting:
Light Speed Graph The theory of relativity predicts that if you accelerate a material object toward the speed of light, three things occur: the length of the object appears to decrease toward zero, the mass appears to increase toward infinity, and time appears to slow to a stop. Thus to accelerate a material object to the velocity of light, it would take an infinite amount of energy to do so. The chart above shows a plot of the Lorentz-Einstein transformation based on percentages. The plot consists of a perfect quarter-circle, equivalent to a simple Pythagorean factor derived from trigonometry. As you can see from the chart, if an object travels at 87% of the speed of light, the length in the direction of travel of the object would appear (from an outside observer) to have diminished by 50 percent. At light speed the length of the object would disappear and the mass would appear infinite, and time would halt to a stop. In spite of the extreme mass densities predicted for large black holes, they would have a finite amount of mass. And because no one has ever detected an infinite mass in the universe (because if they existed they would probably have crushed us by now) it probably means the impossibility of ever achieving light speed, either from nature or intelligent design. |
|
Puzzling hyper-gravity proves weighty mystery www.cnn.com/2001/TECH/space/05/21/gravity.mystery/index.html (CNN) -- An unknown force seeming to pull on a pair of distant space probes has left astronomers with a weighty mystery, one that appears to defy the conventional laws of physics. The Pioneer 10 and Pioneer 11 spacecraft, which for decades have steadily traveled in opposite directions in the solar system, have covered significantly less space then they should have, astronomers said. A team of NASA researchers has systematically attempted to determine what has slowed the sibling NASA robot ships, to no avail. "Something is slowing down the spacecraft. And we have not been successful in finding the source of that. There is more slowing than you would expect from Newtonian gravity," said John Anderson, a senior scientist at NASA's Jet Propulsion Laboratory in Pasadena, California. Mystery force a real drag The probes have traveled far beyond Jupiter since their launch in the early 1970s. But astronomers have been able to measure with great precision the trajectories and distances of the pair. Noticing that Pioneer 10 was unexpectedly lagging on its journey away from the sun, they speculated that an unknown object could have been exerting an influence. But they had to revise that theory when they realized that a mysterious force was acting in an identical manner on Pioneer 11, which was on the other side of the system. "It's the same magnitude and the same direction, namely pointed toward the sun. The force points to the sun in both cases," said Anderson. Astronomers studied the Doppler shift of the radio signals to help calculate the distances of the probes. After extensive analysis, they dismissed instrumentation error, propellant leaks and minor heat emissions as causes of the negative thrust. Perhaps the spacecraft inadvertently produced an unknown force that is not yet understood, Anderson said. Perhaps scientists will have to reconsider basic assumptions about the laws of physics. "No one has come up with a conventional explanation," he said. One possible reason "is that it is a modification of gravity." Pioneer sends shocking signal Launched in the early 1970s, the Pioneers were the first probes to explore the outer solar system, astounding the world when they sent home flyby images of giant planets like Jupiter, Saturn and their moons. The resilient Pioneer 10, now far beyond the orbit of Neptune, surprised astronomers in April when it managed to send a transmission back to Earth as directed. Radio communications with Pioneer 11 ceased in 1995. The scientists were unable to calculate the effects of distant gravity on other deep space probes, like Voyager I or Voyager 2, because they employ a different kind of orientation and propulsion system, Anderson said. Anderson and his colleagues have submitted their work to the journal Physical Review D. Their findings are currently available on the Internet scientific archive site of the Los Alamos National Laboratory, http://www.xxx.lanl.gov. |
|
|
Interesting. Can't be Planet X or that dark star, since it's the same on both sides of the solar system
|
|
Ah, bullshit! As soon as I find my Dilithium Chamber up in the attic, I'm going to prove you and Einstein wrong. So THERE. |
|
|
Well so far nearly all of Einstien's predictions have been experimentally proven to be true, so therefore you are simply wrong. Even 100 years ago we knew that bullets and such went faster then sound. It was thought to be impossble to break the sound barrier with an aircraft due to mechanical contraints, at the time aircraft material and conctruction was not suitable for supersonic flight. That is a completely different matter from going FTL, which is just as physically impossible as it would be to break the first law of thermodynamics. Science doesn't jump from one theory to a completely different one. It refines one theory with a new one which gives more accurate results which more closely model what happens in reality. We will never one day find out that the cosmic speed limit was wrong. We might discover a reason of why there is a cosmic speed limit, or figure out why it is a particular speed, or find out that the limit changes with the age of the universe, etc. |
||
|
The intent was not to build an ACTUAL Dyson sphere for habitation, simply an array of collector satellites in multiple orbits. Just enough to capture and redirect solar radiation.
1. Broadcast energy for spacecraft to achieve significant (.1 c), then a bussard ramscoop for the rest. 2. Mother of all space based defense systems. Focusing the Sun's energy on any incoming asteroids should at least deflect, if not outright vaporize, anything short of the moon. Even an invading fleet of spacecraft. i did read Larry Niven's work. Was in on the joke pulled on him( a check for fifty billion stars to answer the question why the Outsiders were interested in a particular Known Space phenomena) 3. Largest interferometer array in existence. Should be able to resolve tennis balls in Pluto's orbit, certainly Earth-sized planets within a thousand light years around. I won't even go into the overabundance of energy available on earth for such things as contragrav harnesses, flying cars, androids and other technology meant to appear four years ago. |
|
Well since we know that LIGHT has mass(It can be bent by a magnetic field) how come LIGHT can go the speed of LIGHT? BTW, One thing the scientific method tells us is just because some of a persons theories are right doesn't make them all right and until ALL of Einsteins theories are PROVEN to be true there is room for error. Ask anyone who studies string theory. |
|||
|
I'm sure someone will tell me I'm way off base here, but isn't our understanding of our universe limited by our ability to observe it? What has remained unobserved? Well, probably a good deal of the universe! Einstein based his theories on what he had observed of our universe, and so far his predictions have been pretty savvy once we've found the ability to test them. Will that continue to be the case as our ability to see improves?
Luckily, if we want to test our various theories, we must extend our powers of observation, and in so doing will naturally open new vistas of scientific thought. Some theories may be proven true, some will be proven definitively false. And there may yet be a way to instantly travel to another spacetime by exploiting some property of the universe we haven't imagined but will eventually discover. Look back and think of the scientific progress of humanity in just the last 500 years. The growth of knowledge seems to be exponential, so what does the next 500, or 5000 years hold? That depends on three things: 1) Our thirst for discovery overpowering an increasing and global apathy 2) A social/economic/political climate (somewhere) that fosters research, and 3) A means of "warehousing" proven and theoretical knowledge so that science can proceed efficiently without info-glut. Why No. 3? I am a programmer by trade, and I have a hard time keeping up with the latest ideas and methods in my tiny field. As the scope of human knowledge increases dramatically in the next 1000 years, I can see problems with building on the work of other scientists if one doesn't know about the prior work in the first place. Then again, maybe I have no idea what the hell I'm talking about! Alpine ** Edited for spelling... |
|
Nerd
|
|
|
LOL! And I hate Star Trek! |
||
|
So like, what's this equivelant to in Star Trek Warp #s? ....Warp 9, make it so! S.O. |
|
|
Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. One new winner* is announced every week!
You will receive an email every Friday morning featuring the latest chatter from the hottest topics, breaking news surrounding legislation, as well as exclusive deals only available to ARFCOM email subscribers.
AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types.
From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm.
Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more.
Copyright © 1996-2024 AR15.COM LLC. All Rights Reserved.
Any use of this content without express written consent is prohibited.
AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own.