Does Space really go on forever?

Strontium · #51 (**permalink**) 25-09-2007, 05:09 PM

Quote:

Originally Posted by Ukwildlifeo

Thouigh only partly relevant a quote by einstein pops into my head "Only two things are infinite, the universe and human stupidity, and I'm not sure about the former."

Now that IS genius at work

True, I mean he argues much of the latter part of his life against quantum mechanics, and by doing so helps the founders of that theory come up with some truely remarkable ideas that underpin mechanics on the very small scale. His own theory, on gravity had the erronious term that no one liked very much, about gravity being repulsive..(he didnt like it either) Now some of the brightest are trying to unite quantum theory and gravity, and even 11 dimensions and all

Sorry k9, I was thinking about if there was quantum gravity, there would be a possibility that interactions would not occur.

Blackbrook Eye · #52 (**permalink**) 25-09-2007, 05:55 PM

Pondering this problem is a good substitute for counting sheep

hsl · #53 (**permalink**) 25-09-2007, 06:43 PM

Quote:

Originally Posted by k9

I've thoroughly enjoyed reading this thread. I'm glad there are so many out there who are puzzling over the same questions that keep going through my mind. k9

Yeah me too, it's very intersting.

Although I don't get much of it and can't even put in words the questions I want to ask

Tormentil · #54 (**permalink**) 25-09-2007, 07:49 PM

Quote:

Originally Posted by k9

I've thoroughly enjoyed reading this thread.

Me too, but two things have popped into my head.

1. "Does Space really go on forever?" The answer is probably 'Yes', which is why you can't get to heaven in a little row boat.

and

2. If the speed of light is 186,282 miles per second, what's the speed of dark ?

jnb · #55 (**permalink**) 26-09-2007, 08:47 AM

Quote:

Originally Posted by Tormentil

2. If the speed of light is 186,282 miles per second, what's the speed of dark ?

Well as in any material rather than a vacuum there will be the phenomenon of dispersion (the same phenomenon which gives rise to spectra in a prism). Then the dispersion is a function of wavelength and so the speed of light in a medium is a function of its frequency and thus energy. So by that measure as 'dark' is presumably lower energy than light then yes it will have a different speed.

naturelover · #56 (**permalink**) 26-09-2007, 04:28 PM

you have all blown my mind,answer me this,if space goes on for ever whats forever.????

eeyore · #57 (**permalink**) 26-09-2007, 07:33 PM

Quote:

Originally Posted by naturelover

you have all blown my mind,answer me this,if space goes on for ever whats forever.????

and did time start ? if so what was there before it ? and does that mean it might stop

naturelover · #58 (**permalink**) 26-09-2007, 08:17 PM

hi eeyore you answered a question with another question,still dosnt answer what is forever no end,everything has got an end why not space.?????

hsl · #59 (**permalink**) 02-10-2007, 05:27 PM

How do we know what the shape of the universe is? If I read and understood right I mean, It does make sense that it would be sphere-shaped. And can telescopes see that far?

Also, I'm fascinated by black holes but I don't understand most of what I've read about them. Like that jet that shoots out from a black hole is material it can't swallow, isn't it? So what happens to that material and how come the black hole can't swallow it, if it's so powerful?

eeyore · #60 (**permalink**) 03-10-2007, 01:46 PM

Quote:

Originally Posted by hsl

How do we know what the shape of the universe is? If I read and understood right I mean, It does make sense that it would be sphere-shaped. And can telescopes see that far?

Its shaped like a giant moose - everyone knows that