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Do you believe in these following things in space?
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eldude
31-Aug-06, 12:45

Do you believe in these following things in space?
1) wormholes
2) Life out there besides Earth as in intellgence
3) Another deminsion
4) The end of the universe is...
5) Travel faster than the speed of light

Please think these things over and if you believe in them or not and why.
And please dont get religion mixed up with science.

I do believe there is other intellgent creature out there. I would be pretty dissapointed if there wasnt.
I couldnt imagine what the end of the universe is.
I dont think another dimensional would be possible. I would be a cartoon dude! How would we live if there was another dimension?
I believe traveling the light is possible. Just not now for humans.

I'm not much of a long essay/forum writer so I didnt write much.

Thanks,
eldude
eldude
31-Aug-06, 12:51

Oh, I frogot to add
6) Do you think humans will settle on another PLANET in the next couple centuries?

www.islandone.org" target="_blank">-> www.islandone.org
Check this site out, it may help with your decision
tugger
31-Aug-06, 15:10

1... yes, i believe they occur naturally...

2... certainly... the chance of humans being the most intelligent species in the universe is next to nothing... if life can occur here, it occurs everywhere where it is possible... so unless earth happens to be the oldest planet that can support life, there is more advanced species than humans... anybody who thinks we are the most intelligent species in the universe is a muppet, to be frank...

3... deminsion? ok, let's not be childish and point out typos, i make enough of them... dimension? it's difficult to say, really... i believe in other dimensions, but i wonder if i consider that another universe... i can't answer this one without having a deep think...

4... the end of the universe is...? when all the matter has been released from the original super-black hole that created the big bang, the total mass of the universe will have just enough gravitational attraction to halt the expansion of the universe and cause contraction, which will result in the big crush... or maybe something entirely random, like a human in another universe splitting an atom, which just happened to be our universe...

5... no. light speed is the absolute fastest speed possible. what makes me so sure? that famous phrase "the speed of light is constant"... well, in case you weren't aware, this means that whatever speed you are travelling, light will travel away from you at the same speed, reletively speaking... for example, if you're going on a train at 100mph and you shine a torch in the direction of travel, one would naturally assume the light would travel away from you at light speed - 100... wrong... it's still light speed... you haven't started to catch the light up... so if you're going a million miles an hour, light still travels away from you at the same speed... either that or it's accelerating beyond normal light speed, but the light will still be measured at travelling at normal light speed from a static observer... this means that light does not travel in the way we percieve things travelling... it could be said that light is static and we move away from it at a very high speed... could the light go slower than static?

6... i believe humans have already settled on another planet, but that's an entirely different matter...

leo_london
31-Aug-06, 16:38

Well..If we are the most intelligent life in the universe..God ( if there is one ) help us.
eldude
31-Aug-06, 17:43

Intresting tug,
It never really occured to me that if you travel 1,000,000 mph, light would do the same.
Can you also explain this: i
"It takes 8-minutes for light from the sun to reach earth and 3 minutes for light from the moon to reach humans." The moon is defiantly not the half way point from Earh to the sun.... Not even close. How is this possible? Is it that since light bounces off the moon it travels slower?
tugger
31-Aug-06, 17:58

eldude... i think i gave the wrong impression... the speed of light is just under 300 million metres per second, and it will travel away from you at this speed no matter what speed you are travelling at...

and it takes 1.3 seconds for moonlight to reach us... www.physlink.com" target="_blank">-> www.physlink.com

light does not travel slower when reflected... matter, such as water or a prism, will slow light down a little, as will gravity, but not reflection...
water_lilly
31-Aug-06, 21:02

Deleted by water_lilly on 31-Aug-06, 22:18.
alexwilson
31-Aug-06, 21:41

1). I think that wormholes might exist, since space/time is demonstratably not flat per Einstein, it is perfictly possible that there are abnomalies in spacetime that act as a wormhole would.

2). Is there other life in the universe? I would say that since there are more than a billion stars in the Milky Way Galaxy, and quite a few, maybe 100,000 or more stars in the galaxy that are g type dwarf stars like our Sun with planets and possiby 10,000 or more places that could support life, that there is maybe a 99% chance that there is other life in the Milky Way Galaxy, perhaps a great chance there is life or used to be life within our own solar system on Mars or Europa, a Moon that orbits Jupiter. You can also be pretty sure that there are similar odds of finding life in the Andromeda Galaxy, and the other billions of observable galaxies in the universe. I think the interesting quesion is whether they play chess anywhere else in the universe.

3). Is there another dimension? In linear algebra you learn the answer is yes. Mathematics is the modeling of reality. One of the ways we model things is to take measurements. A dimension is just another way of relating one measurement to another. For example, you can easily plot an event in a time in context with length, width and height which would be a four dimensional model of reality. Take a pitch from a pitcher in a baseball game. The ball displaces height width and length and if you throw it, those measurements change over time. If you ask where the baseball has been between the mound and home plate, a four dimensional model with time as the fourth dimension would make the baseball look like a long downwardly curved snake rather than a sphere.

4). Is there an end to the universe? Yes. Observations have concluded that the universe is flying apart too fast to be stopped by gravity. Unless another force of nature is discovered, the universe is destined to fly apart where it will end because of the second law of thermodynamics. All known energy and heat will dissapate and everything in the universe will freeze: a fate known as the heat death of the universe.

5). Is travel faster than the speed of light possible? Not by matter traveling in a flat universe. E=mc*c means that it would take an infinate amount of energy to accellerate anything with mass to the speed of light. All known matter has mass. Now if a particle had a race with a beam of light, and the particle could travel through a wormhole and the beam of light that it was racing had to go the long way, the particle might arrive at its destination first, travelling faster than the light!

eldude
31-Aug-06, 22:17

You
say that the universe is flying. But what is it flying in?
I think one of the questions I should've asked is:
"Is there anything larger than the universe"
qiwi
31-Aug-06, 22:32

THE SPEED OF LIGHT IS CONSTANT...
"...matter such as water or a prism, WILL SLOW LIGHT DOWN A LITTLE, as will gravity..."
OK Tugger now that you have caught our attention which one is it... constant or slowing down a little....?
Or did you mean to say that "...matter such as water or a prism, CAN BEND LIGHT, as will gravity..."
tugger
01-Sep-06, 08:00

ok qiwi, you got me there... of course, the light doesn't actually slow down, it is bent, and therefore appears to have slowed down to a human observer... at least i think...
qiwi
03-Sep-06, 00:33

So where the bloody hell are you?
About 4 years ago a group of Australian scientists from Sydney's Macquarie University led by Paul Davies published research claiming to show that following the Big Bang light has light been gradually slowing down...
It seems unbelievable doesn't it...Australian scientists!... yeah, I was surprised too but apparently they do have them...
As for the implications of their discovery...... "That means giving up the theory of relativity and E=mc2 and all the sort of stuff" Davies told Reuters News Agency....

tugger
03-Sep-06, 10:04

light slowing down? well, that's an interesting concept... this would greatly support big bang / big crunch supporters... when the speed of light (c) reaches 0 then the reverse process...
as for the effect on special relativity, the speed of light is constant would still stand, as it does not rely on c being a particular value, the actual value of c could change with time, so long as that change was consistent throughout the entire universe...
and the effect it would have on E=mc2, it would mean mass increases as light speed decreases... get your head around that... we ourselves are slowly expanding!
alexwilson
03-Sep-06, 17:21

The speed of light as discussed here is the speed of light in a vacuum. The speed of light through various media is slower than the speed of light through a vacuum. I read in Scientific American magazine that researchers had slowed the speed of light through exotic materials and at very low temperatures to the 10 mph range and it was forseeable that light could be "frozen" under the right conditions.
tugger
03-Sep-06, 18:41

10mph? i could outrun that, at least for 30 seconds maybe before i collapsed into a smoker's fit of wheezing and panting for breath... and only if i had a football at my feet, you won't catch me running any other time unless my life depended on it...

yeah, you're right, light speed is measured slower when not in a vacuum... to be quite honest, the behaviour of light baffles me to the extreme... i can get my head around things like gravity and big bang theory, but the behaviour of light?

to answer the original question, i don't believe matter can travel faster than light... it would seem light itself can reacher greater speeds under the right conditions and at certain periods in time, but anything with mass greater than a light beam, no, not faster or even equal to the current light speed...

interestingly, if light is slowing down, then what happens when universal light speed is, say, 100mph? will the required energy for acceleration be proportional to light speed? will a car need all the energy in the universe to reach 100mph? will walking require billions more calories since it is 3% light speed? or will the same energy be required, meaning light speed can be broken for matter, just not yet, not for squllions of years...?

the mind boggles...
alexwilson
03-Sep-06, 19:15

Matter can travel away from each other faster than the speed of light.

If you envision an expanding universe, where particles are imbedded in the space like raisens in a loaf of rising raisen bread, two raisens on extreme sides of the dough might travel away from each other at faster than the speed of light (we are talking of a really, really big lump of dough!). Of course the two raisens would never be aware of the existance of the other since they could not see light from the other, they could never feel any gravity from the other, they could never measure the existence of the other. What is impossible is for any matter to be accellerated to the speed of light. Since F=ma and E=mc(squared),one can see mass approaches infinity the closer a object approaches the speed of light (and time slows down as well). It would take an infinite amound of energy (and time) to accelerate a feather to the speed of light.

But in an expanding universe, it is possible. The observed object would red shift, then dissappear as it approached and surpassed the speed of light.
soulcrates
06-Sep-06, 13:08

Think of the Big Bang as creation of a life.
It doubles, then doubles again, then doubles again. Personally, I have a feeling that if you went infinitely small you'd see the same type of formations as if you went infinitely large. In other words, our universe could very well be a human being, and our solar system an element, perhaps oxygen with the 8 electrons. The similarities between chemistry and the universe are only beginning to be seen. Worm holes are a strange occurence, such as quasars, and other things that could possibly move faster than light. You don't see it move, but you know it changed positions. These are questions we'll only be able to figure out if we actually had the effort in mankind to do so. Apparently the most important things to us now are OIL, and money. Maybe we'll get together one day to actually want to understand the universe, and budget time and money into it. NASA has done great things, but with all of the naysayers trying to funnel money away from it, I don't think it lasts longer than another crash or two. We're just not putting our energy into the space thing, when we're spending trillions on war.
kingofpawns
06-Sep-06, 13:52

One of the...
sad things that has happened to NASA (which the general public does not know) is that funding for life
science has been terminated. The spacestation's main justification was for doing life science research
essential for future space travel. A friend of mine had the contract to build the animal habitats for the space
station, but the Bush crime family cancelled all research. They actually had the habitats built (they are
quite amazing to see) for 30 million dollars (which was one of the few projects done within budget) and now
they are not going to be used.
soulcrates
06-Sep-06, 14:00

This is just another example of what I was preaching.
We're being overwhelmed with inner conflict, that is stopping us from reaching outerspace. It's amazing how simpleminded a government can be about exploring the universe, because they're too involved in the bottom line.
alexwilson
06-Sep-06, 19:08

Deleted by alexwilson on 06-Sep-06, 19:15.



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