Can Outerspace really be endless?????

Question

or is space more like a sphere in which u can never reach the end but just retrace ur steps....

Answer 1

It is all dependent on our understanding of endless. Space is fluid and undefined. It is said that the universe is currently expanding, the big band put everything in motion and it is all essentially still going. One might say that space is the breadth of all matter, and therefore there is a finite limit to the universe (no matter is created or destroyed, it only changes form, ergo all matter in space is limited, therefore space is finite). Or, you can say that since the universe is still expanding, and there is nothing to constrict that expansion (except for the gravity of the universe itself) and so therefore space is endless.
Human beings do not yet have a great enough understanding of our universe to be able to truly comprehend these things. But suffice to say, the universe seems to be both endless, and finite.

Answer 2

Theoretically,

The universe is a sphere and it is always expanding because of the Big Bangs force. We can tell it is expanding because we use the Doppler effect on distant galaxies and the wavelengths frequency has changed. The universe and time can end if gravity is stronger than the force imparted by the big bang, so expansion slows to a halt and reverses. The universe grows denser and hotter, and collapses back into a singularity.

Answer 3

there are two thoughts on this that are sort of what I think you want: one that the universe is ever expanding (meaning it will continue expanding out forever and ever and so there is no end.

The other is that it does have a 'horizon'; and that it will expand then contract back on itself, until it all basically explodes into a big ball of fire, and possibly starts all over again.

Here's one: http://web.uvic.ca/~jtwong/newtheories.htm
Google "is the universe expanding?" is the unverse a bubble?

Answer 4

There is nothing to suggest that outer space is bent, twisted, or folded back on itself in any way.

Outer space as we know it extends out to a "measureable", "seeable", distance of 40 Billion Light Years in all directions from Earth. That seeable distance is as far as we can see with our current technology optical and radio telescope equipment. At present, no useful information can be obtained from distances farther out than that due to the limitations of our equipment.

Now, one can dance around forever with technical terms and the intricacies of specific measurements. However you look at it, from my viewpoint, 40 Billion Light Years is way, way far away from here. It is so unbelievablely far from here that it might as well be an infinite distance away. No one will ever travel there. No one will be sending us messages from there that we "could ever hope to receive." No space probe will arrive there in any of our lifetimes, or that of our children's children.

Now, before you laugh at me, compute this:
Write down the full answer with all digits and complete amount of zeros:
40 Billion Light Years expressed in Miles = ???

Now, divide that number by 40,000 Miles Per Hour.

The answer you get is the number of hours flying time that a space ship would require to fly to the deep space that we
can just barely see with the very last capability of our equipment. That is why no one will ever go there.
to

Answer 5

Yes.

We live in enclosed rooms, so the idea of something being endless is different than our ordinary experiences.