Recent content by Pesj

Will read Smolin´s book. thanks QantumKitty.

I wasn´t directly referring to this paper but to the thread in PF. From that thread the most interesting things for me has been to follow up the critique on LCDM from Kroupa and colleagues. They seem confident among other things that the LCDM is flat out wrong in its predictions on satellite...

Eric, you must not understand the expansion as an outward movement within three dimensions. If so we would observe empty space (no stars or galaxies) "inwards" and "outwards" and the galaxies would lie in a plane or disc in the other directions. This is not the case the universe is evenly...

Back to your opening question. I for my part think a modified understanding of gravitation or the dynamics of the universe is needed. In my view neither modified gravity=MOND or DM seems really up to it. MOND is modifying the math to match observations (not adding insight to why) and LCDM adds...

First of all, the question of what dark energy is, is not really answered and people should try different perspectives on what could be the cause or explanation for what we call dark energy. Your proposal is sort of an explanation I guess, but it has large problems. With a larger than...

In my point of view the question on how life emerges is fundamental and would still be left unanswered if life had been transferred from Mars to earth. An interesting fact if so but not shedding any new light on the emergence of living organisms per se. By the way I agree with cosmo novice on...

I think that this point of view seems reasonable. As far as we know all directions are equal. This assumption makes it logical for me to think of the universe as a "surface" shaped like a 3-sphere. Perhaps that´s not what you mean by round but unless the universe or BB create a closed space you...

Ok, I think this is very interesting but studying FRW-equations will for me take a long time, so I continue our discussion. Again, in my understanding the universal effect of gravity seems to (possibly)be different if you use topologically different models. I understand how gravity slow down...

1) This makes sense if space was considered to be the source of gravitation, which it is not. I don´t know the math around this obviously but I don´t agree with your analogy. 2)Objects gravitate toward each other because of their mass, if the universe is a 3-sphere or closed and...

One popular and credible theory on the overall shape of the universe is the positively curved universe. In my mind that is the 3-sphere which is connected and finite sort of like in the balloon analogy. And the following discussion regards such a universe I think. As I understand the regular...

One answer should be that if it is isolated and keep expand forever, the overall entropy does increase nonstop. But if the universe can reach a point in spacetime when it starts collapsing instead of expanding you could argue that the energy which has been spread out over vast distancies (cold...