What causes "space to expand"? It keeps expanding because "there was an explosion at the beginning of the Universe"? What does that explosion have to do with space expansion?The metric expansion of space is the increase of the distance between two distant parts of the universe with time.[1] It is an intrinsic expansion whereby the scale of space itself changes. It means that the early universe did not expand "into" anything and does not require space to exist "outside" the universe
Was it a "mathematical explosion of space"? So - space is carrying matter, pushing it away? How, and by what forces? Was it a material explosion, then is matter stretching space? If I move do I "stretch space"?
What do they mean by "outside the universe"? How can matter go further away if "there is no space" there? Does matter create space as it goes? Does space push matter? Again, they use a mathematical space like it was the real thing.
If that far away galaxy goes further away, doesn't that mean it has a speed in relation to me? No, the "distance has lengthened" they say, it has no speed (else it breaks the speed limit...). If the distance has lengthened, why did it? If I placed a 1km ruler in between galaxies, would it be stretched? By what forces? And if it does not get stretched (as we can observe on Earth) it simply means "metric expansion of space" is there just to keep safe a certain speed limit and theory.
This is totally insane, and belongs in a Harry Potter sorcery lesson named: "How to expand space!"
And about the speed limit:
https://en.wikipedia.org/wiki/Mass_in_s ... ontroversy
Mass does not increase with speed, right now I move at 100 km/h in relation to a car, and at 1 km/h in relation to another person, and 10000km/s in relation to some galaxy. Well, calculate may "dilated mass" then, using the dilation formula m'=m/sqrt(1-v2/c2). I should have 3 masses. Also I should have 3 sizes (length dilation...). Because mass does not increase, and does not "go to infinity" with speed, there is no speed limit in the Universe.
If someone on the other side of the galaxy has a speed in relation to me (or the reverse), that does not make me heavier, taller and it does not make my clock go faster or slower... I'm not even asking by what physical mechanism could that happen.
The fact that the speed of my clock should vary in relation to how fast or slow someone else moves in relation to me, no matter how far away he is, this is instantaneous action at a distance, in fact pure magic, because there are no causes for this, nobody is looking for them, it just happens... So much for the "speed limit".
http://hyperphysics.phy-astr.gsu.edu/hb ... /tdil.html