Time is infinite?

Question

I have a question?

They say there was a big bang or something, that is how we got here. Space & time are closely related. They can see billions of light years away to find more about the big bang or whatever. Yet they say time is winding down, etc etc.

My question is, they say that space is infinite in size and has no boundaries. If this is true, wouldn't it require infinite time to travel accross infinite space?

Does this prove that time is infinite because of space? What is even more puzzling is if spacetime is infinite, time can't be measured since space can't be measured, so...,

theoretically, we shouldn't even be here? How did we have a beginning if time & space are infinite with no beginning? How can space & time have an end if they have no beginning?

Wouldn't it take infinity for space to collapse if it did collapse, due to its infinite size? If space took infinity, time would also?

How does time exist on earth, despite being inside unmeasurable infinite space?

Answers?

Leviathan, and I am not referring to they can measure time back to the big bang, meaning they can measure space?

I am referring to how they have "seemingly" no way to measure the boundaries of the current space time that we live in. It has been theorized that there are no boundaries (meaning infinite in size)

If space is infinite in size, it cannot be infinite unless time is also. Because it requires infinite time to measure infinite space. No amount of finite time could ever measure an infinite object.

Answer 1

Time is relatively measured, space is not. Speaking of myself, my mind is not capable of understanding what infinity means when it comes to measure "spaces" but i can more easily relate with infinity in terms of measuring "time". Though space and time are related with each other with the factor of "speed", i believe time can exist without space too. It's a high probable scientific forecast that spaces will collapse and disappear one day, but time may linger on in one eternal moment, without needing to specify it by the rings of hours or years.

Answer 2

Time is an illusion? Some people do post some rubbish, don't they?

Time is part of space so asking your question makes no more sense in saying space has to cross space - first off no physicists these days believe the Universe is infinite, least of all the spacetime bubble we can observe to be about 13.7 billion light years across.

Who said space and time have no beginning? The big bang provides the sudden expansion but that WAS all the space and time there was. What caused the big bang is a hot topic of debate right now. You could read up on the ekpyrotic scenarion about membranes hitting each other or just go get a book on cosmology to clear up your ideas on space and time. I'd recommend Brian Greene's Fabric of the Cosmos.

*The measurement of space and time is connected - the observable universe is 13.7 billion light years across - therefore it had zero size 13.7 billion years ago - it doesnt make sense to posit a time before that - there was no time - and time is part of the fabric of our universe. That was Einstein's contribution. There have been suggestions that space accelerated faster than light so that in that 13.7 billion years the actual universe is really trillions and trillions of light years across, with a tiny point of light at the centre (of course you couldnt see that outside because the light wouldnt have reached you yet)*

Answer 3

Q1. “I HAVE A QUESTION?”
I don’t know, do you?

Q2. “THEY SAY THAT SPACE IS INFINITE […]WOULDN'T IT REQUIRE INFINITE TIME TO TRAVEL ACROSS INFINITE SPACE?
Yes. And no.
One of the reasons sky is black is that light didn’t arrive to us yet. Since infinite would mean that light from evenly scattered galaxies would cover the whole sky. But those galaxies are so far from us that… we cannot see them yet.

Q3.- “WHAT IS EVEN MORE PUZZLING IS IF SPACE TIME IS INFINITE, TIME CAN'T BE MEASURED SINCE SPACE CAN'T BE MEASURED”
We measure only what we can see: 13,700:000,000 years.

Q4.- “HOW DID WE HAVE A BEGINNING IF TIME & SPACE ARE INFINITE WITH NO BEGINNING?”
Wrong.
Time did have a beginning. Didn’t you write Big Bang in the first line?

Q5.- “HOW CAN SPACE & TIME HAVE AN END IF THEY HAVE NO BEGINNING?”
Since your premise was wrong, this is wrong.

Q6.- “WOULDN'T IT TAKE INFINITY FOR SPACE TO COLLAPSE IF IT DID COLLAPSE, DUE TO ITS INFINITE SIZE? IF SPACE TOOK INFINITY, TIME WOULD ALSO?”
This is how long I answer in a single question. Otherwise, it would take infinite space in Yahoo!Answers and double infinite of my time.

Q7.-“HOW DOES TIME EXIST ON EARTH, DESPITE BEING INSIDE UNMEASURABLE INFINITE SPACE?”
You can’t add potatoes to tomatoes.

Q8.- “ANSWERS?”
This is an answer. What do you think it was?

------------- -------------- -----------
Can you go back in time? No, you can't. Can you go a couple of minutes into the future? No, you can't.
Time is expanding. Day after day. But dilates with speed.
That's the heart of relativity.
In the limits of the observable universe, bodies are moving with speeds approaching that of light. So time has a limit.

Answer 4

Yes

Answer 5

No, Time is just an illusion...no beginning or end. Are minds cant grasp this. There is meaning to the universe...I have felt it