 |
|
|
|
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Random, and rather curious, fact about the history of astronomy:
In the 1920's it was still not clear to astronomers whether the
Universe had approximately the size of the Milky Way galaxy, or
whether it was much larger than that.
This is rather baffling, given that even such a modern and innovative
theory (still considered valid today) as general relativity was published
in 1915.
They knew about other galaxies, of course, but they weren't sure if
they were just small objects in our galaxy, of whether they were large
galaxies of their own, very far away.
Today we take for granted that the Universe is incomprehensibly larger
than our galaxy, but this has been so for much less than a century.
Source: http://en.wikipedia.org/wiki/The_Great_Debate
--
- Warp
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Warp <war### [at] tag povrayorg> wrote:
> They knew about other galaxies, of course, but they weren't sure if
> they were just small objects in our galaxy, of whether they were large
> galaxies of their own, very far away.
so, they thought our Milky Way was in the center of the Universe much like the
Earth was before, huh? it's always about us, the spoiled children of God...
perhaps our own Universe is nothing but a side-effect of something bigger...
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
nemesis nous apporta ses lumieres en ce 2007/12/28 03:48:
> Warp <war### [at] tagpovrayorg> wrote:
>> They knew about other galaxies, of course, but they weren't sure if
>> they were just small objects in our galaxy, of whether they were large
>> galaxies of their own, very far away.
>
> so, they thought our Milky Way was in the center of the Universe much like the
> Earth was before, huh? it's always about us, the spoiled children of God...
>
> perhaps our own Universe is nothing but a side-effect of something bigger...
>
>
The universe is so large that when you see it from just about anywhere, it looks
like you are at it's center. Just looking at the night sky, you can hardly say
if you are at the center of the galaxy or not.
The Universe is like a large sphere whose center is everywhere and the
circumference nowhere. (sory, I don't remember the source)
--
Alain
-------------------------------------------------
Grandchildren are God's reward for not killing your own.
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Alain <ele### [at] netscapenet> wrote:
> Just looking at the night sky, you can hardly say
> if you are at the center of the galaxy or not.
If you were at the center of the galaxy you wouldn't be looking at the
sky. I think you would be infinitely small.
> The Universe is like a large sphere whose center is everywhere and the
> circumference nowhere. (sory, I don't remember the source)
If the universe is finite, it must have a border, no?
--
- Warp
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Warp escribió:
> Alain <ele### [at] netscapenet> wrote:
>> The Universe is like a large sphere whose center is everywhere and the
>> circumference nowhere. (sory, I don't remember the source)
>
> If the universe is finite, it must have a border, no?
>
But is it finite?
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
>> If the universe is finite, it must have a border, no?
>>
>
> But is it finite?
Now there's a question...
--
http://blog.orphi.me.uk/
http://www.zazzle.com/MathematicalOrchid*
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Warp nous apporta ses lumieres en ce 2007/12/28 15:14:
> Alain <ele### [at] netscapenet> wrote:
>> Just looking at the night sky, you can hardly say
>> if you are at the center of the galaxy or not.
>
> If you were at the center of the galaxy you wouldn't be looking at the
> sky. I think you would be infinitely small.
>
>> The Universe is like a large sphere whose center is everywhere and the
>> circumference nowhere. (sory, I don't remember the source)
>
> If the universe is finite, it must have a border, no?
>
Finite? Maybe.
Must have a border? Maybe not. Or it may just be that there is no way to
perceive it, even if you are almost "touching" it...
You can have an unbounded thing that is finite. A 4 dimention sphere can be
finite, but it don't have any edge in 3D. And the universe probably contains
more than 7 dimentions...
--
Alain
-------------------------------------------------
My wife is such a bad cook, in my house we pray after the meal.
Rodney Dangerfield
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Orchid XP v7 nous apporta ses lumieres en ce 2007/12/28 15:32:
>>> If the universe is finite, it must have a border, no?
>>>
>>
>> But is it finite?
>
> Now there's a question...
>
It could be infinite but with a definite, mesurable, edge, or finite with no
edge, or something else...
--
Alain
-------------------------------------------------
You know you've been raytracing too long when you've convinced your boss that
raytracing is really an integral part of your job title (and you really don't
work in a position that requires it).
Quietly Watching
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Nicolas Alvarez <nic### [at] gmailisthebestcom> wrote:
> > If the universe is finite, it must have a border, no?
> But is it finite?
According to the current consensus in science, it probably is. There's
no reason to believe otherwise.
--
- Warp
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Alain <ele### [at] netscapenet> wrote:
> Finite? Maybe.
> Must have a border? Maybe not. Or it may just be that there is no way to
> perceive it, even if you are almost "touching" it...
If there is a border, it's probably impossible for us to ever reach it.
There's this thing called "cosmological horizon" which, if true, means
that there's just no way, even theoretical, for as to "see" it in any way.
But that doesn't mean there is no border.
--
- Warp
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
