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fairy nuff. :angel:
As homer said, it's a doughnut shape
Well, no one really knows.
BUT you are comparing other unintelligent earth life forms to us.... our saving grace is that we can spread out from this planet.... if and this is a BIG if, we can colonize other worlds then we have a fighting chance at survival, we would have to spread out far and wide, so that the possibility of a supernova couldnt get us all. i think if we can last the next 100 years here then we have a good chance, by then it doesnt really matter what happens to the earth, we will still have good size colonies elsewhere.. some will say 100 years is too short, but technology is advancing in quantum leaps.
Craig
actually at this point in time the universe IS infinate, as it is expanding at an accelerating rate, therefore if its expanding it has no end and is therfore infinate, but there is some debate as to whether it will in the future slow then stop and start to contract. these theories seem to be the 2 main theories.
Then again i think the chance that they are all wrong is more possible, i think it is just beyond our comprehesion and current knowledge. our knowledge of the universe is comparable to an ameoba's knowledge of the earth i believe
Craig
100 years? slightly pessimistic....and unrealistic don't you think? :crazyeyes
Oh yes. I've bought myself a plot on the moon. Bargain for £50.
And for my 90th birthday I'm getting myself cryogenitically frozen.
we cant even imagine what technology will be like in 100 years, litteraly cant imagine it. 100 years ago they didnt think the car would last more than a few months, let alone imagine that we would be sending men to the moon, or sending probes past pluto.... as it stands now computers are doubling in power in less than a year, in the next few years they will come out with the celluar computer, that will be 1000's of times more powerful than anything around right now, and it will fit on a fingernail. this is an advancement that is already here, they just need to work out a few small ( and some not quite so smal ) bugs.
I dont think im being overly optimistic that in 100 years we will have colonized other planets. it wont be government that does it, but big business that will do it..
Craig
Im not sure on this one... it seems to really too much on peoples testimony and little on hard evidence
But what does this have to do with bloody aliens? Looks to me like you're just wanting to mention something about technology like you've done in RK's thread, Theres more than enough oil to last for the next 50 to 60 years, but we do need to start to think of other sources of energy, and well lets face it, renewable energy just isnt going to cut it, even the most hard core enviromental scientist are now starting to say that it just isnt feasible, with the technology at hand, well see what the next 30 years brings...
Stick to topic.
topics evolve
:nervous:
obviously its interesting enough, it has you replying.....
and if you look back the topic had already started to evole, it wasnt about aliens anymore, it had gone on to cosmology.
To be honest I don't even know what anyone is trying to debate now :no:
looking at the case of probability i'm sure there's either some super master race out there who's just got the technology for finding life in the universe and are coming for us or little oragnisms in the infacy of life, or something in between, what matters is they haven't found us, bastards!
Wrong. It's been proven mathematically.
ah i see, well if you notice after i posted it the first few were fairly commical, so i had posted another noting that i didnt think it would get anywhere, maybe thats when it went off base, looks like its getting back on track now
"The shape of the universe is determined by a struggle between the momentum of expansion and the pull of gravity. The rate of expansion is expressed by the Hubble Constant, Ho, while the strength of gravity depends on the density and pressure of the matter in the universe. If the pressure of the matter is low, as is the case with most forms of matter we know of, then the fate of the universe is governed by the density. If the density of the universe is less than the "critical density" which is proportional to the square of the Hubble constant, then the universe will expand forever. If the density of the universe is greater than the "critical density", then gravity will eventually win and the universe will collapse back on itself, the so called "Big Crunch". However, the results of the WMAP mission and observations of distant supernova have suggested that the expansion of the universe is actually accelerating which implies the existence of a form of matter with a strong negative pressure, such as the cosmological constant. This strange form of matter is also sometimes referred to as the "dark energy". If dark energy in fact plays a significant role in the evolution of the universe, then in all likelihood the universe will continue to expand forever. "
If the universe is infinate in size how come its size is determined by gravity?
That theory relies on gravity being a constant force throughout the universe. We've no proof that it is.
I'll try and find the article about the infinite nature of the universe (and post it in a language people can understand, rather than the C&P nightmare above).
It's been a long day, and reading chunks of text with no paragraphs makes my eyes bleed.
A few years ago Hubble noticed that all stars are moving away from us at a constant rate. All of them. So either the universe is expanding or light behaves in a decidely funy way a long way away.
It's easiest if you think of the universe as a glass of water, slowly being heated (because of stars). The water expands, but eventually the fuel for the fire burns out and the water will return to it's original size. Hubbles constant is the rate of expansion relative to our small solar system.
(To the physics guys, I realise this is massivley over-simplified, it's just a guide for scytherchick.)
But probably the best way to explain it. Well played.
The fact that distant stellar bodies have been noted to be moving away from us implies expansion.
The whole thing about Hubbles Constant is quite hotly debated, with expansion rates varying from theory to theory.
Some of the problems about this that I know about are the use of standard candles such as cepheids to measure relative distance. Another is that the expansion might be due to local factors, and not replicated elsewhere in the universe. We have no knowledge of what is helping relative to other areas.
Hubble was a strange man as well, the dissappearing body story being my favourite.
And I'm very grateful...I can now keep halfway up with this theory of the universe stuff.