If the universe is expanding, then what is it expanding into?

Question

can some one expand on this with some more physics

Answer 1

Time

Answer 2

By definition the Universe is everything. It is possible for the definition to be changed but that is the definition from the dictionary. The concept of the "Universe is expanding" relates to there being more distance between things as time progresses.
In the experience we personally have, when something gets bigger(like a balloon) it expands into the space previously occupied by something else. When the Universe expands there is nothing that was not already part of the Universe. Therefore there is nothing for the Universe to displace.
Einstein saw that his Theory of General Relativity implied that the Universe would not be stable and so he introduced an extra feature to keep the Universe constant in size.
Hubble first related observations in astronomy with this concept. He pointed out that the red shift of light received from stars far from earth was consistent with the expansion of the Universe.

Answer 3

The concept of the universe expanding is itself in doubt. It can be seen as expanding, but is it really expanding or is the spacial matter simply realigning as it does every 16.9 gozillion Earth years. We only been here for about 10,000 years, and all ready dated stuff that is 3.1 billion years older than today.By those scales we aren't even amoebas in the big show that we are observing.
200 years ago if a man said I shall fly! he would have been found insane and locked away.
100 years ago if a man had said, I shall walk on the moon, same story, better meds.
We are the infants with the self taught idea that we possess some form of higher intellect, well look around, does this look like the world of a Higher Intellect?
So the universe is expanding into an unknown. See its not so hard to admit that what we really have no idea of. The hard part is accepting how much we think we know.
Thats adds up to nothing. Same place the Universe is expanding out of.

Answer 4

A slight misconception there -- the idea is that the universe is EVERYTHING (assuming you don't accept the "multiverse" theory), including space. So the universe is simply expanding, its boundaries moving outwards at ever increasing speeds, but there is nothing outside that boundary -- it's reality itself that is expanding, not just a portion of it expanding into another.

Answer 5

Hello,

The universe is indeed expanding, the answer is the universe is expanding into the primal void.

All other universes also exsist in the void, all multiverses too. The primal void is the space that is unknowable, unseable, unthinkable, unmeasurable,etc. Its a total and utter mystery. its so big you cannot conceive of how big it is, its way beyond the biggest biggest thing a human being can conceive of, thats how big it is.

IR

Answer 6

Some people theorise there is a Multiverse, which harbours multiple Universe. Or perhaps there is nothing at the walls of the Universe but twisted space and all we are doing is getting larger and not necessarily moving into anything.

Answer 7

It creates its own space as it expands. This is essentially the current thinking by real physicists.

Answer 8

Nobody knows. It is beyond any current science.

Answer 9

The expansion is an illusion!!

Th

Answer 10

Something HUGE