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 Posted: Thu, 20th May 2010 21:26 Post subject: Celestia |
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After seeing Mass Effect 1 galaxy map in 3-d, I felt compelled by the urge to reinstall celestia. It's the bees-knees. Wish all the known nabulæ, constellations, galaxies, stars etc were intact.
Check it out: http://www.shatters.net/celestia/
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LeoNatan
☢ NFOHump Despot ☢
Posts: 73194
Location: Ramat Gan, Israel 🇮🇱
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| Posted: Thu, 20th May 2010 21:28 Post subject: |
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Yeah, Celestia is really good, and there are amazing mods for it, so make sure to go through the library and add them. There are literally gigabyres of data for some of the mods. 
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deelix
PDIP Member
Posts: 32062
Location: Norway
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| Posted: Thu, 20th May 2010 22:04 Post subject: |
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Yo Leo, do you get Astophysics classes?
If yes: Isn't time invented by humans? Isn't it just the human perception of seconds miliseconds, hours, days passing by? So how come they say, with the current expansion of universe time is getting slower? Could it be the lenght between the sun and earth getting larger ergo earth making a full turn around sun in a longer time than 365 days? How come it's the 4th dimension when it doesn't even exist?
If no: disregard this message.
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LeoNatan
☢ NFOHump Despot ☢
Posts: 73194
Location: Ramat Gan, Israel 🇮🇱
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| Posted: Thu, 20th May 2010 22:11 Post subject: |
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Well, sure, but the expansion is so slow for out perception, that it is probably quite meaningless for the lifespan of the sun anyway. 
About dimensions, how do you know it doesn't exist? I haven't studied quantum physics beyond reading here and there, but current theories work with 10-11 dimensions, so... 
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| Posted: Thu, 20th May 2010 22:20 Post subject: |
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I mean whatever happens, time will continue to flow, there just won't be a place for it to be perceived or exist in. (By 'it doesn't exist' I meant in physical form since the other 3 are in physical form) So fuck what Immanuel Kant says "to be is to be perceived" (I may not remember correctly) even if there are noone to perceive it, even if the universe explodes or shrinks into a point won't time continue to flow?
10-11 dimensions? Wow, mind boggling. I've been thinking about universe for a few days. (yes after I beat mass effect that is) and it's a very interesting subject. Even though I fail to grasp.
Edit: it's Berkeley : (
Last edited by Lord_IpwnU on Thu, 20th May 2010 22:22; edited 1 time in total
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| Posted: Thu, 20th May 2010 22:24 Post subject: |
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Atropa thanks for the injections mate. Much appreciated.
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| Posted: Thu, 20th May 2010 22:26 Post subject: |
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| Lord_IpwnU wrote: |
10-11 dimensions? Wow, mind boggling. I've been thinking about universe for a few days. (yes after I beat mass effect that is) and it's a very interesting subject. Even though I fail to grasp.
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To my knowledge they haven't seen any sign of more dimensions. So atm it is just pure mathematics. They might look for higgs-particle to let everything have a mass first.
Btw why would it matter if time flew or not if there weren't anyone to observe?
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| Posted: Thu, 20th May 2010 22:29 Post subject: |
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Because if it continues to flow it would refute some astrophysicist claims about "when universe shrinks time will stop flowing" My assertation is: time is invented by humans to 'keep track of events' as you said. It doesn't exist in physical form, so when everything is no more it will be intact. If there is another universe in the same pool as our universe in, the events will keep happening in other universe because time still flows. Hope I made my point clear.
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Lutzifer
Modzilla
Posts: 12740
Location: ____________________ **** vegan zombie **** GRRAAIIINNSS _______
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| Posted: Thu, 20th May 2010 22:43 Post subject: |
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moved the thread, because it shouldnt be in the useless void. <3
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| Posted: Thu, 20th May 2010 22:44 Post subject: |
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Thanks Lutz. My intention was getting more attention since useless void is more popular than general chatter.
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| Posted: Thu, 20th May 2010 22:50 Post subject: |
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When I had my one course 2 years ago they were unsure if the universe had enough mass to make it crunch or not. Unfortunatly that approximation was with out "the dark energy" which seems to tare the universe apart with tremendous force.
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| Posted: Thu, 20th May 2010 22:56 Post subject: |
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Yeah but at the begining of page it states that some science people assert that it will shrink though it doesn't give a source. I really can't find the article right now : (
I mean when I think like this: there will be something (I can't define its name yet) which will suck everything into itself. Like the once free mithocondria getting into the cell providing energy, everything else in the universe will go in that thing (probably a black hole I'm thinking of) It will suck everything into itself, it will have near infinite density, epsilon mass. Then the infinite loop will begin, big bang, planck time.
Just a theory though, you may laugh at this.
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-=Cartoon=-
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| Posted: Thu, 20th May 2010 23:05 Post subject: |
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| Posted: Thu, 20th May 2010 23:05 Post subject: |
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That is how the big crunch works. Epsilon is however often used about very small things. Black holes tend to somewhat heavy.
It is more comforting that everything will last forever than just some cold as fuck nothingness but I haven't heard of anything pointing that way myself.
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| Posted: Thu, 20th May 2010 23:43 Post subject: |
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It's a shame that there is no good plugin/mod management implemented in celestia, as especially some of the older mods are a pain in the ass to install. It's just not nice to have 10 different approaches to install a basic higher resolution texture 
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| Posted: Thu, 20th May 2010 23:46 Post subject: |
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Reading these threads always makes me feel like shit; I hate it when there are important things I am not very knowledgable about. So assuming with our always so limited knowledge we are on the right track thinking the universe is expanding due to dark energy. How does an expanding universe slow down time? Isnt time independent of matter, absolute time is a flow of immaterial passing. Time as we perceive it isnt the same thing. Assuming time is the same as our perception of time; time slowing down would not change our perception as when time slows down we slow down and the perception stays the same. Time could slow down if matter would be to expand in size but that is a completely unrelated thing.
I am probably completely wrong and shortsighted, I hardly know much about astrophysics or normal physics for that matter.
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| Posted: Thu, 20th May 2010 23:55 Post subject: |
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| Ragedoctor wrote: | Reading these threads always makes me feel like shit; I hate it when there are important things I am not very knowledgable about. So assuming with our always so limited knowledge we are on the right track thinking the universe is expanding due to dark energy. How does an expanding universe slow down time? Isnt time independent of matter, absolute time is a flow of immaterial passing. Time as we perceive it isnt the same thing. Assuming time is the same as our perception of time; time slowing down would not change our perception as when time slows down we slow down and the perception stays the same. Time could slow down if matter would be to expand in size but that is a completely unrelated thing.
I am probably completely wrong and shortsighted, I hardly know much about astrophysics or normal physics for that matter. |
It's all pure theory. My first guess is that it has to do with light speed, same as when time slows down when you're moving. And that again is pure mathematics (you move at 100km/s, and you turn on the flashlight, and light moves at 300 000km/s, so the total speed of the light coming out of the flashlight is 300 100 km/s. But since nothing can go faster than lightspeed, 300 000 km/s is the limit, some other variable must change, and that other variable is time)
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| Posted: Thu, 20th May 2010 23:59 Post subject: |
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It's actually possible to measure the time difference for objects that go faster than we are. So it's not just theory, it has been proven that for one who is traveling fast, everything around him "works" slower.
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TSR69
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Frant
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| Posted: Fri, 21st May 2010 08:50 Post subject: |
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Time is a relative way to measure differences in any kind of scale.
Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn!
"The sky was the color of a TV tuned to a dead station" - Neuromancer
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Frant
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| Posted: Fri, 21st May 2010 11:59 Post subject: |
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Speed "OF" light
Speed of thought interests me a bit...
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| Posted: Fri, 21st May 2010 12:17 Post subject: |
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| Ragedoctor wrote: | Things as simple as gravity, are they not faster than light speed? I mean the gravity of something, for example the universes core is affecting our speed right? But not enough and therefore we expand and dark energy speeds it up. Isnt that gravity faster that light, I mean its always pulling and if it was slower that light speed the matter from the Big Bang would have escaped its grasp and we would have been scattered long ago.
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If gravity was faster than light we would be able to "see" the gravity from beyond the event horizon. This would make the universe seem heavier than it is, and not lighter. Furthermore there is no such thing as the core of the universe.
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