I always here them say that the universe is endless.To me this makes sense,like your never gonna run into a?

Question

wall in space.How is it possible,that space has no starting and ending? like, if I walk down Midland ave.,it stops about 5 miles north of palisade.If I go in the other direction it eventually stops.Someone,please help me to understand this concept.

Answer 1

the answer I've heard an actual physics professor give went something like this:

pretend you are two-dimensional. You don't understand the idea of the third dimension, because to you, it isn't perceivable. Now imagine that a three-dimensional being came by and curled your dimension (a piece of paper, for example) into a cylinder or a sphere.

How would you perceive such a thing? The answer is that you would be walking along and suddenly, you would be back to where you started. To see this, simply trace a line on a cylinder or a sphere.

Changing metaphors, let's say you are a two-dimensional being living on the rubber surface of a balloon. What is inside the balloon? What is outside the balloon? The answer in reference to a two-dimensional world is simply unavailable because nobody in this universe has any way to perceive or measure this phenomenon.

So (and I understand this is hard) think of us living in some sort of three-dimensional surface wrapped around itself in the same way that a sheet of rubber is wrapped to create a balloon. The answer to "what is outside of the universe?" is something we will never be able to answer because we will never be able to reach an edge of the universe. In fact, there is no such thing as the edge of the universe. The universe simply loops back on itself.

The universe is expanding the same way a balloon expands when someone in our dimension blows into it. Draw dots on a balloon for an illustration: the dots get further and further appart when you blow up the balloon, in much the same way that the stars and galaxies in our universe are constantly getting further and further appart.

It took me many many hours to wrap my head around this concept at the time, but I hope I've managed to explain it well enough. This is an excellent question :)

Answer 2

One of God's(Jesus Christ) name's besides the main name, is I Am I Am. Or as he said it to moses at the burning bush "I Am that I Am", meaning He has no beginningand He has no end. He always was always is and always will be. Heaven and Earth can pass away but God will still be there.
We God created the universe he created it in a way that reveals some things about his nature. He made the universe to have no end becuase He has no end. The shape of the planets are based on that same name; a sphere is the best shape to illistrate no beginning and no end. The only directionyou can say a shpere is limited is outward which is the direction space ships go to escape earth. But yeah, God has created the universe after his nature. One more example is, newton's (I think it's newton) law of motion that says an object in motion will stay in motion until acted upon. If you read in Genesis about when God destroyed sodom & Ghomorah, the was only one righteous man found between those two cities, and God told him & his family to flee the cities an not look back. He told them not to look back becuase God's attitude is once you Go foward with Him He doesnt want you looking back,going back or anything that suggest returning.
That is why in space there's no way to really stop.Slow down maybe but he doesnt want yo stoping or returning. The lack of friction is designed to aid us in getting to the other planets and moons. But again the main aswer to your question is I Am I Am=always was always is and always will be.

Answer 3

OK, think of it this way...if you started walking east, and assume you kept going, eventually you'd come back to where you started (accepting the illogic of being able to walk in a strightline for thousands of miles, over oceans, etc.) Same if you headed north, south, or any other direction....
There are some theories that space is like this, there is no edge, but there is a finite amount of it, if you went off in your rocket, eventually, (and probably longer than the age of the universe) you'd come back around to where you started.

Did you ever play the old asteroids video game? If you went off the right side of the screen, you came back on the left? space could be like that...only on a larger scale and in three dimensions...

But again, no one really knows.

Answer 4

Two simple theories: One works, one doesn't

1. Matter cannot exist in infinite quantities unless its "weight" is balanced out by anti-matter so therefore the Universe is infinite
Problem:Infinity is not a possible number or quantity

2. At the edge of our Universe there is a wall, like a bubble, that you have to get through without breaking (otherwise it would destroy the universe), to get to the next dimension.
Possible: It is likely that there are other universes in other dimensions, but has yet to be proven.

Answer 5

think of a circle.. possibly expanding, though when i look around i have serious doubts on that one. none the less it curves back into itself, the same way people sometimes do. like i was "cool", i curved so hard into dork that ive come all the back around into "cool" again. close the circle and im a cool dork. maybe theres some conflict with those that want to stay on the outside of the circle, it really doesnt work. thats probably not really an option anyway.

Answer 6

I think it's kinda like counting numbers. Numbers are endless; if you think of the biggest number you can think of, you can always add one, or times by two, and get a bigger number. You can always go one more step. Theoretically, it's like that with the universe There is nothing causing it to have an end. If space is pretty much a vacuum, what's going to cause that to end? In order to make nothing end, there'd have to be something.

Answer 7

here is a simple way to think of it just don't take it literally,think about walking on a perfectly round and smooth sphere no matter which way you walk you can walk forever it has no end.Work for you? Infinity is a very hard concept to REALLY get a grasp on,good luck!

Answer 8

The Universe is just a rain drop falling inside another Universe. It will be destroyed as soon as it hits ground.

Answer 9

The part you have to "get" is that the universe is "reality" and reality is expanding. You could never get to the edge of it because if you got there you would simply be at the edge of the expanding reality and it would always simply expand as you move forward. Since you are "real" you could never bump against the edge of non-reality ...... you would simply create new reality.

Answer 10

To say the universe is endless is just theoretical, the known universe is 13.7 billion light years in radius. Scientists take what happens outside of that to be of no use as we can not know for sure.