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Never noticed this before but it appears galaxy's are very similar to one and other:

Ours:

Image

and Andromeda:

Image

Dunno what it means, they're very much alike. Wonder what other galaxy's look like? The same? Vastly different? :chin:





Sorry they're only url's but that annoying "It was not possible to determine the dimensions of the image." message came up :evil:

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I think the similarity is down to gravity and obriting around a cenre ( solar system is a similar structure ). What gets the objects spinning though I dunno.

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I watched a lot of those Brian Cox shows about astronomy and he explained this phenomenon very well.

Trouble is, being an old bloke with a poor memory I've forgotten how it all works, dammit.

Here's a starter though -

http://www.bbc.co.uk/science/space/univ ... s/galaxies

There's a clip about spiral galaxies, I might watch it later to refresh my memory - then forget it all again by next week. :)

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Interesting stuff. I wonder how many planets with life exist in our Galaxy Alone.

btw - moving to NASA/Space forum - :thumb:

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smeggypants wrote:Interesting stuff. I wonder how many planets with life exist in our Galaxy Alone.

btw - moving to NASA/Space forum - :thumb:


Probably is some but I was thinking about parallel universes where there's a species similar to us, maybe Andromeda? Maybe more advanced, maybe less so............

How many universes are there?

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phild05 wrote:
smeggypants wrote:Interesting stuff. I wonder how many planets with life exist in our Galaxy Alone.

btw - moving to NASA/Space forum - :thumb:


Probably is some but I was thinking about parallel universes where there's a species similar to us, maybe Andromeda? Maybe more advanced, maybe less so............

How many universes are there?


The various conditions and stages which happened to create life on earth were absolutely extraordinary. Some seem to thing that if a few simple organic chemicals get fromed that soon creatures will be stomping around on legs but it is a great deal more complicated than that. If it hadn't been for the earth being at the right temperature to allow the growth of blue-green algae in the oceans then we'd never have existed. There are hundreds of other very unusual changes which got us to where we are now.

Fifty years ago scientist Frank Drake came up with the Drake Equation which suggested that there might be 50,000 civilisations capable of communicating across the galaxy. Now obviously the SETI project hasn't found one yet and I, for one, think his calculation is much too simple. I reckon that life above the level of complex organic molecules is very, very rare indeed, maybe none in our galaxy at all.

Though that's only my opinion. :)

As for parallel universes, well maybe but that's just idle speculation. When astronomers talk of that they tend to mean separate universes across the space-time continuum, rather than other physical galaxies. :):

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phild05 wrote:
smeggypants wrote:Interesting stuff. I wonder how many planets with life exist in our Galaxy Alone.

btw - moving to NASA/Space forum - :thumb:


Probably is some but I was thinking about parallel universes where there's a species similar to us, maybe Andromeda? Maybe more advanced, maybe less so............

How many universes are there?


There could be an infinite amount. A few scientists theorised about Multiverses. I was watching a program on discovery only the other day in which they've found a shift of matter slightly to one side of the universe, which would possibly indicate another universe alongside ours exerting a pull of gravity on it.

But then that would be an adjacent universe rather than a parrallel universe(s) occupying the same space

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Would be good of there were infinite universes. It would mean there would definitely be other life, in fact there would be an infinite amount of life and even infinite exact copies of us :eek4:



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Resonance wrote:Would be good of there were infinite universes. It would mean there would definitely be other life, in fact there would be an infinite amount of life and even infinite exact copies of us :eek4:


Even infinite copies of Margaret Thatcher, Simon Cowell and Eamonn Holmes ? <shudders>

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Big shudder :) :)

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diablo wrote:
Resonance wrote:Would be good of there were infinite universes. It would mean there would definitely be other life, in fact there would be an infinite amount of life and even infinite exact copies of us :eek4:


Even infinite copies of Margaret Thatcher, Simon Cowell and Eamonn Holmes ? <shudders>


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I'll have nightmares. :)

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diablo wrote:I'll have nightmares. :)


Thinking about it if there are infinite universes your exact copy is currently shagging Margaret Thatcher. In fact it's happening an infinite amount of times. What's worse my infinite amount of copies are doing the same :eek:

Don't have nightmares :D



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Oh I think they are guaranteed now. :eek4: I daren't go to sleep. :eek:

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diablo wrote:Oh I think they are guaranteed now. :eek4: I daren't go to sleep. :eek:


:rofl: :rofl:



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Shudders and infinite amount of times!!

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I believe there are more simularities throughout the uninerse & between other galaxies, down to smaller scale. Which reminds me of when I was at school for my electrical trade. I couldn't help thinking how in electron theory, that it appeared to resemble galaxies, but on a much smaller scale. You have your nucleus and orbiting electrons. There appears to be a certain order of many things.

I have to believe there is plenty of life throughout the universe and many things in other galaxies are the same or similar. But there also has to be many things that are completely different. Say, on earth we have our table of elements known to us. But have to wonder what other elements are out there that haven't made it to our reach. The possibilites of different life forms are really something to think about. Just here on earth alone, scientists think life here in 100 to 200 million years from now would seem alien to us, and that's just from the expected changes in the environment.

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Good post Steve. How ya doin bud?

Yeah, there does seem to be some kind of order of things no matter what universe you're looking at. That table of elements thing is interesting. Scientists have been trying for centuries to complete it and must be looking elsewhere for the missing bits. There's probably a bunch of scientists in another universe with the other half of the table :) One day, they may all meet and complete it :splif:

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ZapAxe wrote:I believe there are more simularities throughout the uninerse & between other galaxies, down to smaller scale.



Oh yes !


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Channel Hopper wrote:
ZapAxe wrote:I believe there are more simularities throughout the uninerse & between other galaxies, down to smaller scale.



Oh yes !




Amazing!!

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