Posted: Mar 25, 2017 9:54 am
The density parameter of the observable universe is equal to one which means it is flat. Were it spherical
it would have to be greater than one. The universe is from a spatial perspective three dimensional so it is
not flat in the Euclidean sense. It appears relatively smooth at the classical level though but not so at the
quantum one. Hence the incompatibility between GR and QM
Space is expanding faster between galaxies as there is no matter to slow it down. It is also expanding within
galaxies but at a slower rate. The Big Bang is still happening so it is wrong to think of it as a past event. It is
also wrong to think of it as a single hypothesis as there are multiple models referencing the beginning of the
observable universe. But they all have a Big Bang within them
The observable universe does not necessarily constitute the entire universe and assuming they re not the same
the boundary cannot be seen. Light cannot be seen beyond the Cosmic Microwave Background. That means the
original point at which the Big Bang occurred cannot be seen either. Although they are only separated by some
380 000 years which in cosmic terms is hardly anything at all
it would have to be greater than one. The universe is from a spatial perspective three dimensional so it is
not flat in the Euclidean sense. It appears relatively smooth at the classical level though but not so at the
quantum one. Hence the incompatibility between GR and QM
Space is expanding faster between galaxies as there is no matter to slow it down. It is also expanding within
galaxies but at a slower rate. The Big Bang is still happening so it is wrong to think of it as a past event. It is
also wrong to think of it as a single hypothesis as there are multiple models referencing the beginning of the
observable universe. But they all have a Big Bang within them
The observable universe does not necessarily constitute the entire universe and assuming they re not the same
the boundary cannot be seen. Light cannot be seen beyond the Cosmic Microwave Background. That means the
original point at which the Big Bang occurred cannot be seen either. Although they are only separated by some
380 000 years which in cosmic terms is hardly anything at all