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The Universe: Infinite Or With A Boundary
Whether it’s more troubling to imagine that the Universe goes on forever in every direction, or that it has an edge, beyond which there is nothing, is hard to say.
Astrophysics doesn’t provide any guidance as to which flavour of existential crisis we should be having – while we can’t say with any level of confidence whether the Universe goes on forever or not, we can say that our observable universe has an edge, in the sense that there’s a distance beyond which, whatever may or may not exist, we absolutely cannot see it.
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The Age Of The Ever-Expanding Universe
The stranger physics comes in when you ask, what are those things whose light has travelled for that long? The Big Bang theory says that the Universe 13.8 billion years ago was a hot, dense inferno, in which all of space was filled with glowing-hot plasma, rippling and churning like the surface o...
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The Standard Resolution
The standard resolution to this paradox invokes the finite age of the cosmos and the speed of light. Even if the cosmos is endless and full of star...
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We Are Not The Center Of The Universe
While we may never know if the Universe as a whole is infinite or bounded, we know that the cosmic microwave background – the distant shell of fading fire that surrounds us – is the most distant light...
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Another Paradox Resolved
The reason the Universe can be glowing all around us but still look dark comes down to the physics of light in an expanding universe. When space expands, and the distance between objects grows, the light passing between those things gets stretched out, shifting the light to lower frequencies on t...
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Olbers’ Paradox
Olbers’ Paradox asks: if the Universe is infinite, and if there are stars (or galaxies) throughout it, why is the sky dark? Surely, if we look in any direction in the sky, that sightline will, eventually, land on a sta...
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Life Cannot Be The Same After A Crisis
Bouncing back from a profound loss or suffering may be impossible for many, as the crisis has created a black hole in their universe, which they have now entered. It is not the time to look back, as the past self is suddenly useless and irrelevant.
Bouncing back does not take into account ...
Do we live in discrete or continuous world?
First we should solve this question: Is there a distance in between the two things? Are the two things separated?
Now, if, just if … there is a distance in between them, then there is something or nothingness in between them. If that so, then whether there is
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