Space explained - look in a "empty" cardboard box - what do you see - space, or area. That space is no different than the space that is light years away. now put 2 tennis balls in the box, push them in opposite directions - what do you have? you have 2 objects moving apart - this doesnt mean that space is expanding - its just 2 objects moving through space. but some scientist make the claim that this is proof that space expands. it is important to analyze data correctly if you are to understand the truth about anything.
Only a physical something can expand (or contract). Space is not a something since space isn't composed of anything. If you disagree then kindly give us the chemical formula for space! Thus, space cannot expand (or contract), but objects - those physical somethings - can expand in space either expanding on their own (like a metal ball in space will expand or contract in space if in direct sunlight or shaded from the Sun) or by moving away from another something.
Thus, in modern cosmology, the expanding Universe is actually galaxies moving away from each other IN space and not expanding by being carried piggyback style ON space (which the typical dots-on-the-surface of-an-expanding-balloon analogy would have you believe).
Universe is Not Expanding After All, Controversial Study Suggests
Evidence for a Non-Expanding Universe:
Surface Brightness Data From HUDF
The background and history of the possible discovery of the reasons for
Evidence the Universe ISN'T Expanding, Oxford University Space and Astronomy Society Presentation
I know I've explained this before, but I might as well try. The reason it's we know it's expanding is based on how the galaxies are moving away from us. The further we look out into the universe, the faster they are moving away from us. The rate of expansion averages out to be about 70 km/sec per megaparsec. That means for every 3.24 million light years apart, galaxies move apart at a rate of 70 km/sec. So a galaxy that is 6.48 million light years away is moving away from us at 140 km/sec. A galaxy that is 324 million light years away is moving away from us at 7,000 km/sec. At around 7 billion light years away, a galaxy is moving away from us at about half the speed of light. At around 14 billion light years, a galaxy is moving away from us at near light speed. That means that if galaxies were simply moving, the most distant galaxies we can see are traveling at the speed of light. That's impossible and those galaxies would break apart. They'd break apart at 7 billion light years and half the speed of light. That's how we know it's not just galaxies moving. Based on observations, we know that galaxies are moving away from each other at a certain rate.. which would be expansion and not just from momentum.
Also need to remember that if we look at a galaxy that is 7 billion light years away and it's moving away from us at half the speed of light.. we (The Milky Way galaxy) would appear to be moving away from them at half the speed of light. If we see a galaxy moving away from us at near light speed, we are moving away from them from their point of view at near light speed. We know our galaxy isn't moving at near light speed though, and from that we can deduce that they aren't moving at near light speed either.
We don't know why yet, but the amount of space between galaxies is increasing at a specific rate.. causing all the galaxies to move apart evenly. That action is expansion.
Wasnt there a guy named Albert Einstein who had some input on the nature of space? Our whole understanding of gravity, at the moment, is predicated on the concept of space being malleable. Twistable. Stretchable. Got a better idea? Certainly there are other theories and ideas being put forth, but unfortunately for the OP, at the moment, the standard model is the best we have. The theory of relativity is one of the best evidentially supported theories in science.
The movement of objects through space does not define the expansion of the universe any more than the movement of food through one’s bowels define the expansion of one’s waist. The expansion of “space” becomes observable through the study of the electromagnetic spectrum (which includes, but is not limited to the visible light portion of the electromagnetic spectrum), by observing and recording the appearance of change in the wavelength (blueshift or redshift), astronomers can determine the range, trajectory, and velocity of an object relative to our own location in space. Examining a single object does not, in and of itself, identify the expansion of the universe, however by comparing all of the objects observed and recording their relative position, trajectory, and velocity in 3 dimensional space, we can create a visual model of the expansion of the observed universe.
I see arguments like this from flat-earth folks all the time
Fairly sure I've never seen a worse explanation, but you responses to criticism (entirely justified criticism, btw) leads me to believe it wouldn't matter.
In your example the box would be expanding pulling the tennis balls further apart and the tennis balls movement would be independent of the boxes expansion. Pretty sure you won't understand that, but it's for someone else to grasp, not you. Anyways, there's lots more wrong with your post but why bother? Just farting in the wind.
The expansion of space doesn't have to do with movement through space at all. Imagine putting two dots on the surface of the balloon and blowing it up. The dots aren't moving along the surface of the balloon (which would be analogous to your tennis balls moving through space), but they do grow farther apart as the surface of the balloon expands. At least that's how I understand it.
space is a distance of scaled measurement between 2 points. an area or a volume. rather simple. Space in and of itself is not a thing. It is not a matter to be listed on the periodic table of elements. Yet, space exist. Space has always been and space will always be, it cannot be created nor destroyed. Remove all known elements from existance and still left with space even if there is nothing to measure it with. Space a paradox. the existence of non-existance.
You misrepresent the situation. The tennis balls are accelerating away from one another. Scientists aren’t say that this is conclusive proof, they are saying it is evidence for space expanding. There is a distinction there. Do you have a better explanation?
Also want to add, that you're basically fucking up the idea that the universe is infinite. Like I've said before, I believe the universe is infinite as well.. but to say that space cannot expand because it's infinite is putting a limit on it, and therefore wouldn't be infinite. I know you agree that an infinite universe wouldn't have a shape, that would be putting a limit on it.
In an infinite universe, you could take an area that is 100 times larger than our observable universe and compress it down to the size of an atom.. and you'd still have an infinite universe. You could take away or add any amount and you'll still have an infinite universe. It can expand or contract, you could go Thanos and destroy "half" of it, you could magically double every atom in size.. no matter what happens, you'll still have an infinite universe.
By saying that an infinite universe cannot expand, you're exposing your ignorance on what it means to be infinite.
But everything is moving away from us. Given that we are spectacularly unlikely to be the centre of the universe then it implies that the universe expands; draw a circle on a balloon and inflate it- the circle will expand away from its own centre in all directions, even if the circle is not on the centre of the balloon.