Is space and time infinite?

[Thor]

Is space and time infinite?

I think so...Im not sure there is an end to anything lol

 

[XMan101]

The planets stop, but space / nothingness goes on forever, it's illogical to think otherwise.

Energy doesn't disappear either, everything remains in the universe, it has nowhere else to go to.

Time is also travelling at a different speed outside the Earth's atmosphere. The navigation systems that most have in their cars now are reading satelite data which is military controlled. Every day they have to make a minor adjustment because the timing goes out slightly. That's because the speed of time is different so affects the clocks.

It sounds quite bizarre but it is a fact. We know so little about what is out there and around us, and equate everything with the science we know on the planet surface that can be measured.

 

[garth33]

Holy crap buddies...here's a snap from Hubble that shows more GALAXIES in 1 small frame of space than we could ever explore in 10 lifetimes!

and it's only a fraction of outer space...so in terms of humanity? I'd say space and time are infinite...and good reasons for us to think BEYOND the limits of the ONE SMALL PLANET in the ONE SMALL SOLAR SYSTEM in the ONE SMALL GALAXY we live in. The size and scope of the universe is beyond human comprehension IMO - at least it's humbling...

peace!
g33

 

[bill_008]

Infinite can be something so 'big' that cannot be calculated. So, I think space and time has its limit, not limitless.

 

[XMan101]

Infinite can be something so 'big' that cannot be calculated. So, I think space and time has its limit, not limitless.

If you come to a wall there is something on the other side. If you cross a huge desert there is something on the other side - otherwise the desert is endless.

If space comes to an end what is at the other side? If there is something then space is effectively carrying on with something in it, if there is nothing, then space is not stopping, it's just that it's empty.

So what is your theory of how space ends?

 

[tincan]

Space is limitless. That's why humans are so fascinated with it. We're starting to outgrow our planet and wish to explore the next one. The cycle will continue.

I do like the Red Dwarf idea though. When space reaches its limit everything will go in reverse, including time. So we'll all be on something like rewind.

 

[hammervice]

Yeah i 2 think everything just goes on and on forever

 

[Bo.]

​

 

[bill_008]

If you come to a wall there is something on the other side. If you cross a huge desert there is something on the other side - otherwise the desert is endless.

If space comes to an end what is at the other side? If there is something then space is effectively carrying on with something in it, if there is nothing, then space is not stopping, it's just that it's empty.

So what is your theory of how space ends?

Until this moment, nobody knows what is the 'other side' or how it 'ends'. Maybe it will come out again at the opposite side (having the impression of limitless), or maybe there is another universe, or anything that we can't think of.

Until the day humans figure out, it is not limitless anymore. Just few hundred years ago, aren't human think that Earth is flat and there is limit? How do you know whether the universe is spherical (so come out the other side when you reach the 'end') or it is flat, or any dimension?

 

[XMan101]

Hmm interesting thought - I'd forgotten that idea

 

[slimjim]

Who cares....when it's this beautiful

 

[Bo.]

The beautiful Trifid Nebula is a colorful study in cosmic contrasts. Also known as M20, it lies about 5,000 light-years away toward the nebula rich constellation Sagittarius. A star forming region in the plane of our galaxy, the Trifid illustrates three different types of astronomical nebulae; red emission nebulae dominated by light emitted by hydrogen atoms, blue reflection nebulae produced by dust reflecting starlight, and dark nebulae where dense dust clouds appear in silhouette. The bright red emission region, roughly separated into three parts by obscuring, dark dust lanes, lends the Trifid its popular name. In this gorgeous wide view, the red emission is also juxtaposed with the telltale blue haze of reflection nebulae. Pillars and jets sculpted by newborn stars, left of the emission nebula's center, appear in Hubble Space Telescope close-up images of the region. The Trifid Nebula is about 40 light-years across.

____________________________




The Cosmic Web of the Tarantula Nebula
First cataloged as a star, 30 Doradus is actually an immense star forming region in nearby galaxy The Large Magellanic Cloud. The region's spidery appearance is responsible for its popular name, the Tarantula nebula, except that this tarantula is about 1,000 light-years across, and 180,000 light-years away in the southern constellation Dorado. If the Tarantula nebula were at the distance of the Orion Nebula (1,500 light-years), the nearest stellar nursery to Earth, it would appear to cover about 30 degrees (60 full moons) on the sky. The spindly arms of the Tarantula nebula surround NGC 2070, a star cluster that contains some of the brightest, most massive stars known. Intriguing details of the nebula are visible in this scientifically-colored image. The cosmic Tarantula also lies near the site of the closest recent supernova.​

 

[slimjim]

 

[mikawa]

the prevailing and more realistic theory says that the universe is now expanding itself and if its expanding is because it has limits. Thats the Big Bang Theory [the real theory, not the program on tv xD its really funny but im not talking about tv xD] One day nobody knows when, the universe will be in state of entrophy [i think thats the word in english] and it means that the universe will do exacly the opposite and will get smaller and smaller until be a simple particle or even less. After that it will may start its expansion again or may disappear forever.

Anyway, there are other dimensions and things or places that defies all the phisic laws known, like the black holes. The black holes can destroy the energy and the matter, they even absorb the light, and no one knows whats inside of them. Nothing? Other world? It could be even the same world but in another age.

And about if time is limitless or not... The speed can defies the time so its not like if it were a river in which you couldnt go ahead to the future or come back to the past, but if we're still here and humans of the future havent come here, just can be three possibilities

1- Humans or any other kind of intelligent lifes couldnt find the way of traveling on time before the universe's life ends
2- Humans or any other kind of intelligent lifes couldnt find the way of traveling on time before the time's life ends
3- Its impossible and maybe the time could have or not its limit

 

[alexfot55]

Perhaps they are but this is not going to help me in the hunt for willing beauty tomorrow.

 

[diklik]

Einstein, Hawking and others have had much to say about the space-time continuum. Myself - I expect that one day we will discover that there are an infinite number of other universes and galaxies and "space" aside from the ones of which we now know. Even as our own space begins its predicted entropy and shrinks along with our timeline, my expectation is that humans will be seeking out other universes.

Perhaps one day we will "boldly go where no man (human at least) has gone before" and see a bit of what lies out there.

(with a tip of the hat to the late Gene Roddenberry, creator of 'Star Trek'.)

 

[Tjerk12]

Dear Thor,

May be I can contribute something to this thread by translating the last page of a little book that I wrote some years ago (the text is even in Dutch a bit difficult, so I do hope that I found the right words).
It describes relativity.
The relativity of things.
Finally, I would like to indicate the relativity of things. Everything is relative, also the things that happened in this story. Mister Einstein, a scientist, was able to proof that even time is relative. We have the idea that the world moves on, that things get better as we know more. We were able to proof that the smallest is smaller than we thought. Yet that makes the biggest in relation bigger. The distance between small and big seems therefore more difficult to bridge. Since we know more about the universe we realize that it is bigger than we thought, but that means at the same time that our knowledge of the whole has become relative smaller. More can lead to less. When we move forward we progress. That sounds nice. We speak about progression and cherish that thought. But when we move forward we mean that we move in forward direction compared to a fixed point. We could conceive that as if we stand still and the world moves backwards. But that means that our progress means a decline for the world. Ah, everything is exceptional complicated and certainly relative.

 

[gb2000ie]

This really depends on what you mean by infinite.

If you just mean un-imaginably big - then definitely. If you mean actually infinite - then that's much less certain.

Time came into being at the big bang, so the past is definitely not infinite, so, for it to be infinite, the future must go on for ever. Right now the latest and greatest science strongly supports an infinity of time going forward, but, a big crunch to match the big bang is not impossible either.

As for space - it all came from a single point, and expanded at a set rate, so I'm not seeing where the infinities would come from. What we do know is that we cannot see an edge, and, that the edge of the visible universe is nowhere near a real edge because we see no edge effects. So - for all intents and purposes, the universe is definitely effectively infinite.

One thing's for sure - there is a heck of a lot of dead empty nothing out there. We are a tiny island of life in a vast vast vast ocean of lifelessness. We may not be the only island of course, but our little earth is still a very special place, and we should remember that before we get caught up in parochial issues and start hating each other and trying to kill each other.

B.

 

[Sandrik]

No because the Space is already expanding, but the realy good question is ... to where ???

For me this is realy spooky ! ;o)

And for Humans the Space IS INFINITE, BUT don´t be sorry, we have Star Trek and Star Wars !

Realy BIIIIGGGGG thanks to Gene and thanks to Georg !

 

[tullamoreboy1]

definitely, but it does stop