i just want opinions, is space infinite?

Answer 1

I believe so.

everything is moving away from us, space goes on forever.

Answer 2

By any measure, space is indeed infinite. If you consider our ability to travel to some hypothetical edge, it would take (by many, many multiples) more energy and time than is available to us. From an observational point of view, our most powerful telescopes pick up light from objects that emitted their light soon after the big bang. These objects are at the edge of the part of the universe observable to us, and they do not seem to have any special qualities that would cause us to think they are somehow near a physical edge to the universe. The increasing rate of the expansion of space is more evidence that space is infinite.

BTW, a previous answer described the big bang as originating from a point in space-this is a mischaracterization. The space did not exist before the big bang occurred. The big bang is a set of equations that describes the universe earlier in its history, when it was smaller, hotter, and denser. Since the density of matter and enegy within a region of space defines the nature of that space, the early universe was just as infinite then as it is today (if, in fact, it is indeed infinite.) Many TV shows about the big bang also give the same mischaracterization.

Answer 3

I have adopted the cosmological point of view that space and time were both created at the instant of the big bang.

Space and time are so entangled with each other that the very concept of one without the other is incomprehensible.
Indeed, they are just different facets of a single thing - space-time.

It has been said that "time is where you can measure it".

"Before" the big bang there would have been no conceivable way of measuring time, due to the total lack of "events" of any kind by which to measure it.

...and without time, you don't have...

Space is also something that is meaningless if it cannot be measured, even with arbitrary units.

So, according to this model, space is finite, yet continuously expanding outward at the speed of...time.

Answer 4

It is hard to imagine space to be infinite..Space could be assumed to be spherical for example (more natural), and if we keep traveling in a straight line (as defined by path of light), which could really curve around and reach the same place, after a very long journey, or the irregularities in space could keep us going around the space for ever, before hitting the starting point. The problem is, there is no way to know where we started in space too, due to lack of a good stationary reference point, as most things we know are moving around. And there could be multiple such spaces too.

Answer 5

as an opinion, mine is pretty lame, but.... I can't see the Universe being infinite.... all around me, I see the physical properties of everything else being 'recycled'.... birth, death, growth, rot, something changes to something else.... stars explode and their dust becomes a planet.... so, no, I don't think it just goes on until it's totally empty and gone....I think there's a place and a reason in the far future when the whole expansion thing will reverse and it will all come back to be the Big Crunch and start over, remade.....
I know all the brilliant minds of the time think otherwise, but you asked for personal opinion.....

Answer 6

Probably not. Why? Because if space was infinity, then the sky would be ablaze with the light of an infinite amount of stars. Of course it looks pretty black to me so I doubt it's infinite. This is called Olber's paradox. Of course one could also argue that there is an infinite amount of dust to block the light of the infinite number of stars, or perhaps the universe is expanding fast enough so that the light from the infinity of stars never reaches us.

Answer 7

No. Space is created as the universe expands from its original big bang state. Assuming 15 billion years of expansion at the speed of light, that makes the universe staggeringly vast, but finite, since its age and the speed of light are finite.

Answer 8

Once Einstein said that space is infinite.The universe just keeps on expanding.All the planets and stars are moving away from the solar system.I think space will expand and go on forever until a huge Black hole sucks up the whole universe.

Answer 9

Well... No one knows. But of course in my opinion, it is. Because of human's insanely unsatisfied curiosity, we'll probably keep trying to find out whether it is. Now if it's infinite, wouldn't it just means 'too bad' for us? Since we'll never get our answer.

Answer 10

The universe is so large that no single being could hope to ever fully understand it. In this sense, whether the volume or mass or whatever other metric is finite or not is really a moot point.

Answer 11

Thought provoking question, but who know's and how will we ever know, it is so vast , I should imagine that it will be quite a few life times before anyone comes close to answering that