No Big Bang? Quantum equation predicts universe has no beginning It will be interesting to see where this goes! :nerd:
Idk man the Reapers said that to me once and there was all sorts of ass kicking. Not that it has something to do with that but Commander Shepard proves everyone wrong at some point. "Keep it up tough guy. You'll leave in a bag" - Commander Shepard
Until we can take a starship to the center of the galaxy and breach the great barrier to speak to god well never know.
From what I can tell the "No Big Bang singularity" referred to is part of the "universe" hypothesis, which afaik has been replaced by Quantum Physicists in favour of the more widely accepted "multiverse" for quite some time now. With multiverse there was "a big bang" creating our universe and laws of physics, however it was not THE Big Bang. Instead it was of many infinitely recurring big bangs, each one creating a new universe with it's own random laws of physics. At the beginning of the bang there were no laws of physics, they came some time later when things had cooled off a bit. This is part of the Higgs Boson thing, the particle which creates mass. Also "the big crunch" ending has been outdated for a long time - that was Hawkings' theory, but the discovery of accelerating expansion - and more importantly Dark Energy - changed that picture completely. Due to the total amount of Energy and Mass measured in our universe, scientists now believe their will be a "Big Rip", not a big crunch. I prob sound like a total Star Trek geek, but it's just been a closet interest of mine...lol. I'm not a geek. This presentation explains things in laymans terms. I don't really like Krauss, imo he's an arrogant narcissist but his lectures are very interesting and humorous. The "from nothing" part is his own theory, everything else he talks about is empirical.
This is very interesting any way you spin it. The Big Bang is just a (human) theory anyway, allbeit a valid one based on current observations and theories by physicists. The multiverse theory is basically the same, however it assumes multiple universes were born in that fashion AFAIK. Which seems like a probable and sound presumption. Of course, the BIG question is what was there before the "bangs"? Neither mass nor energy just exist out of the blue, to our knowledge, so it's very interesting to think about the actual "moment of creation" in physical terms. Plus there is a certain law, the second law of thermodynamics that is (to our knowlede) valid throughout the universe: "all systems tend to go towards their energy minimum" ie towards the maximum entropy (=state of free energy). This, in turn, means all systems tend towards "chaos". As it's the least-organized (=chaos) state that contains the least energy. In laymans terms this means: do nothing and your house starts seeming like "chaos" (=the minimum energy state). To bring order in to it (to clean up) requires bringing energy in to the system. And surely we all can agree that cleaning up, ie creating order out of chaos, consumes (=requires) energy. A certain well-known physicist once said: "say you can disprove the law of gravity, and I will listen" "say you can disprove Newtons laws, and I will listen" "say you can disprove the second law of thermodynamics, and I'll say you're crazy". In the end, and in the beginning, there's only chaos.
Some other interesting theories: http://discovermagazine.com/2008/apr/25-3-theories-that-might-blow-up-the-big-bang And related music:
The universe will "end" one day meaning that the energy that fuel the stars will end one day. The universe will be totally dark and there will be no support for life. It will take some billions of years. But before that the sun will become a red giant and consume the Earth as it diameter grows. We won't have the chance to see this.
Haha, classic IF there's something after death. All our theories are flawed by our very existance and mindset. With our current understanding of reality itself, may it be three or four dimensions that the common yokel like me percept, or the superdimensional string theory (only called like that so yokels like me can give it a name), it's all still based on our mind thinking in dimensions. The true answer, if there even is one, is beyond what we can grasp. All that is and exists is beyond the idea of an all powerful god (what was before god?) and the big bang (what was before the big bang?). The path towards true knowledge would ultimately mean true power, and I personally believe the search for it, be it philosophical or scientific or religeous, is a worthy and honorable goal, but it certainly should not lead us as humanity in it's current state to an answer. Better put our energy into cleaning our house or building new rigs, that's what yokel me says
It follows naturally. How long do stars live in the context of eternity? The fuel runs out eventually. ^^This
Doesn't conservation of energy sort of mean that won't be the case. Yes Stars die not because the energy just ends but because it changes state, the energy is still there it is just in another form.