Science fiction theories about universe

Mathematics and Science; the subtle and ubiquitous arts

Re: Science fiction theories about universe

Post by r-ID on Sat May 09, 2009 11:55 am
([msg=23472]see Re: Science fiction theories about universe[/msg])

but what about that universe collapse? can you give any links?
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Re: Science fiction theories about universe

Post by godofcereal on Sat May 09, 2009 12:01 pm
([msg=23473]see Re: Science fiction theories about universe[/msg])

The Big Rip with dark energy
http://en.wikipedia.org/wiki/Big_Rip
Dark matter ends the universe
http://www.dailygalaxy.com/my_weblog/20 ... erse-.html
There is another rip or tear that happens with dark matter but I cant find it.

http://startswithabang.com/?p=1808
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Re: Science fiction theories about universe

Post by r-ID on Sat May 09, 2009 12:05 pm
([msg=23474]see Re: Science fiction theories about universe[/msg])

http://en.wikipedia.org/wiki/Ultimate_f ... e_universe
http://en.wikipedia.org/wiki/File:Universe.svg
only 2 ways seams possible:
1) becoming alone dying star in the desert of the universe
2) being sucked into black hole
and all that depends on mysterious unknown dark energy
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Re: Science fiction theories about universe

Post by godofcereal on Sat May 09, 2009 12:17 pm
([msg=23475]see Re: Science fiction theories about universe[/msg])

And if that all depends on dark energy why do people keep talking about dark matter?
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Re: Science fiction theories about universe

Post by xorot on Tue Jun 16, 2009 6:25 am
([msg=25427]see Re: Science fiction theories about universe[/msg])

i personally don't like dark matter/energy. it's simply something astro physics is using to get around the issue of 'there is something that we don't see, and especially don't understand'

we have a table of elements which we consider to be pretty much complete, all of them characterised by several numbers. if(!) we trust in the completeness of that table, then there is no reason to have an element that is not re-emiting light. unless you have can think of a physical system of an atom that has only a single eigenstate to its corresponding hamiltonian ... because then you could not excite it.

plenty of crap. in addition, if i recall correctly, they recently found a merged galaxy of some special sort: it would require dark matter to have that shape/form, but then it's special way of creation was up to now used to show that exactly those galaxies don't have dark matter ... sorry, can't find the reference at the moment.

and then there are plenty of examples of galaxies that have no dark matter and actually don't need it - in one example it seems that a cloud of hydrogen gas seems to do the trick ...

after all, i don't blame the astrophysicists. gravitational constant is one of the worst known constants you can think about (precision of about 10^-4).

from my point of view one should rather regard that whole 'dark something' stage at the moment as the first step to some new physics.
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