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and is it moving in a straight line? This is assuming the big bang theory is accurate and that the centre of the universe is the site of the alleged big bang.

We probably need to know this before we begin time travelling.

2007-05-10 01:02:19 · 16 answers · asked by xenobyte72 5 in Science & Mathematics Astronomy & Space

Isn't the fourth dimension time? We all have a working understanding of time don't we? That's what I'm worried about, what if I travelled back one day but forgot to factor in the motion of the heavenly bodies and re-appeared 24 hours earlier in a point in space that the world or even the solar system was destined to encounter the moment I left.

2007-05-10 03:13:00 · update #1

16 answers

i like when people at least put this is what i believe before their statements involving this. those that are stating them like they are fact makes me wonder how they know since nobody really knows. how do we know that the big bang happened throughout all of space it could be more of a local phenomenon in space terms of course. how do you know if you go in a straight line that you will end up where you began. that to me indicates the universe is a globe so whats on the outside of that globe has to be something eh??

i don't think Hawking with his extreme theory's Einstein or any of the great thinkers can comprehend it. we can't comprehend time because we don't see it we can't see what it actually is doing or how it interacts with actual space. some theorize time becomes warped around a black hole. if that is true then how do we begin to fathom a 4th dimension which we can only make a term for, but is much more then just a measurement of units. I have heard theory's that time is a much more permeable item like threads running through space that is hard to fathom but i cant discount it either because i have no clue how it works. others talk about other dimensions now that one i want to see very neat idea though.

either way i believe that i have said to much and said nothing at all.

2007-05-16 13:13:37 · answer #1 · answered by shag m 1 · 0 0

According to the Big Bang hypothesis there is not actually a centre.
The BB relies on the Copernican principle a consequence of which is that the universe has no centre and no edge. This is an assumption with no empirical evidence. It is a philosophical position popular with those who don't like the idea that the sun and earth might in any way be special.
http://www.googlesyndicatedsearch.com/u/creationontheweb?q=copernican&hl=en&lr=

Personally I do not accept the Copernican principle. The sun and earth are evidencially extremely unusual as far as we can see from looking at other stars.

I think we are at the centre of the universe. In fact the earth was created before the rest of the universe, so it makes sense that it is in the centre.
And I prefer to believe that the universe does have an edge. Much more intuitive than BB evolutionary hand-waving

2007-05-10 08:36:58 · answer #2 · answered by a Real Truthseeker 7 · 0 1

There is no "centre of the universe". Except, we are at the centre.

If you think this is confusing, you need to understand that the big bang wasn't an explosion of stuff into a space, it was an explosion of space itself. This means it happened *everywhere*. So any part of space is the location of the big bang, and therefore every part of space is the centre.

We can see this by the fact that all the galaxies we can see are rushing away from us, as measured by their red-shift. This would however be equally true wherever we were - all parts of space are rushing away from all other parts. The further away a galaxy is from us, the faster it is moving away from us.

2007-05-10 02:14:38 · answer #3 · answered by Daniel R 6 · 0 0

Who knows where the centre is?(if there is one)You should bear in mind that you are asking about a straight line in 4 (at least)dimensional space time.Even Einstein had to sort out other kinds of geometry to cope with that.

2007-05-10 02:07:16 · answer #4 · answered by Anonymous · 0 0

The question of how fast the sun is moving can be answered.
About 1,000,000 miles a day or about 42, 000 miles an hour.
This is in the milky way, relative to the surrounding galaxies

2007-05-10 02:05:47 · answer #5 · answered by Lorenzo Steed 7 · 0 0

You should ask maybe: "around the center of our galaxy (Milky Way)..."; well participating in the spinning of the galaxy, our Solar System has a linear speed in average of 216 km/s... However there are many other motions of the Sun and its planetary system, each has its own velocity.

2007-05-10 01:37:03 · answer #6 · answered by Anonymous · 0 0

this is difficult for most people to understand but the geometry of the universe is not what you think it is. space and time are linked together, you cant have one without the other, therefore the universe is four dimensional not three dimensional like a ball. we know this thanks to our freind einstein. so to put it simply, if you went straight for as long as you could, you would eventually end up back where you started. i know this is hard to comprehend but its true. so the universe has no center. i hope this helps!!!!!

2007-05-10 01:56:16 · answer #7 · answered by Bones 3 · 0 0

How do you find out where the centre of the universe is. We cant even see all of it so we have no idea of how big it is.

2007-05-10 01:10:19 · answer #8 · answered by Anonymous · 0 0

There is no center. It all heppened through out the universe at the same time.

2007-05-10 01:05:56 · answer #9 · answered by Gene 7 · 0 0

If the universe is infinite, how can it have a centre?

2007-05-10 01:07:30 · answer #10 · answered by bumblecherry 5 · 0 0

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