Thread: Centre of ?
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Old 13-04-2011, 10:37 PM
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Brian W (Brian)
The Wanderer

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Join Date: Jan 2008
Location: Dumaguete Philippines
Posts: 757
Quote:
Originally Posted by bojan View Post
Brian,
If you take into account that 99% (or close to that) of mass of Solar system is concentrated in the Sun (see here) then you can safely say that Solar system looks the same looking from the centre of the system (Sun). The rest (planets) are just statistical dispersion, pretty insignificant for the big picture.
This is the meaning of words "looks the same". You can do some reading on the subject here.
Hi Bojan,
I am getting better I actually understood most of the big words. If I am getting the picture 'looks the same' means not an ocular similarity but a similarity in 'physics'. (more or less)

Now the quote below takes us back to my first post...(bold print is mine)

"The cosmological principle is usually stated formally as 'Viewed on a sufficiently large scale, the properties of the Universe are the same for all observers.' This amounts to the strongly philosophical statement that the part of the Universe which we can see is a fair sample, and that the same physical laws apply throughout. In essence, this in a sense says that the Universe is knowable and is playing fair with scientists.[1]"

Does anyone care to put a number to or describe just how large a sufficiently large scale is?

Brian
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