Does Space Have An Edge ?
Jan. 16th, 2019 10:04 am![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
jazzy_daveHere’s an artists impression/map of the entire observable universe. The artist, Pablo Carlos Budassi, has used an exponential scale to make it fit. You will see the Earth/Solar system in the centre, and as you move out, the scales increases exponentially. The light travelling back to us from the “edge” is showing what it looked liked in 13.8 billion years ago (when it was really small!?).
Is there “empty space” outside the universe? The answer is almost certainly NO. First, when we say universe, we should be saying “observable universe.” That’s what we can see, and by definition we’re at the center. But there’s nothing special about us, our 3rd rock from the sun, the milky way, any of it. There’s no reason to believe that the universe doesn’t stretch on forever, and that on large scales its uniform and just like our own. And all this stuff exploded from a tiny smaller scale about 13.8 billion years ago, but it didn’t explode “into” empty space. Space expanded rapidly, carrying things apart like raisins in bread (they are themselves not moving relative to the bread, but the bread is expanding).
This beautiful — and scientifically designed — picture does not answer the question. Every curious, thinking person asks, if the universe is finite, what is there beyond it? If it is infinite, what is that, really? we are asking about two concepts virtually impossible to visualize: infinity and oblivion. The latter means the existence of absolute nothing, which in a contradictory way cannot even fit the word “existence.” Nothing, the void.. When the universe dies, again there will be nothing, no space, no time, no light, no dark, no anything. On the other hand, theoretical physicists are coming up with explanations such as wormholes, parallel universes, eleven dimension space based on string theory, membrane theories and so on.
Perhaps this space has no edge and that everything within the niverse is just that but then we are creeping towards metaphysics .. just that i find this all so fascinating.
{from Quora}
Is there “empty space” outside the universe? The answer is almost certainly NO. First, when we say universe, we should be saying “observable universe.” That’s what we can see, and by definition we’re at the center. But there’s nothing special about us, our 3rd rock from the sun, the milky way, any of it. There’s no reason to believe that the universe doesn’t stretch on forever, and that on large scales its uniform and just like our own. And all this stuff exploded from a tiny smaller scale about 13.8 billion years ago, but it didn’t explode “into” empty space. Space expanded rapidly, carrying things apart like raisins in bread (they are themselves not moving relative to the bread, but the bread is expanding).
This beautiful — and scientifically designed — picture does not answer the question. Every curious, thinking person asks, if the universe is finite, what is there beyond it? If it is infinite, what is that, really? we are asking about two concepts virtually impossible to visualize: infinity and oblivion. The latter means the existence of absolute nothing, which in a contradictory way cannot even fit the word “existence.” Nothing, the void.. When the universe dies, again there will be nothing, no space, no time, no light, no dark, no anything. On the other hand, theoretical physicists are coming up with explanations such as wormholes, parallel universes, eleven dimension space based on string theory, membrane theories and so on.
Perhaps this space has no edge and that everything within the niverse is just that but then we are creeping towards metaphysics .. just that i find this all so fascinating.
{from Quora}
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