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Scale of the Universe

(scaleofuniverse.com)
249 points Leftium | 7 comments | 19 Apr 24 03:53 UTC | HN request time: 0.203s | source | bottom
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NayamAmarshe ◴[19 Apr 24 09:32 UTC] No.40084790[source]▶
I love the end of it, just a big circle of random static noise. Looking at stuff like this always brings up the question of why does anything exist at all?
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kromem ◴[19 Apr 24 10:13 UTC] No.40084978[source]▶
The counterpoint to that thought is why we should think non-existence is even possible. There doesn't seem to be any indication that nothing could exist other than our capacity to imagine it being so.

It's what's so annoying with people arguing about "something from nothing."

Even a vacuum has zero point energy. The idea that there could even be 'nothing' at any point in time is arguably a bigger leap of faith than the notion of some deity for whose sake it is being argued as a presupposition.

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1. vbezhenar ◴[19 Apr 24 12:34 UTC] No.40086025[source]▶
If something's not reachable with speed of light, it exists only in one's imagination.

If something's not emitting any information (black hole insides), it exists only in one's imagination.

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2. NayamAmarshe ◴[19 Apr 24 12:54 UTC] No.40086219[source]▶
If something is in imagination, where exactly does it exist? What plane and what dimension? Where is it situated and what's the extent of it?

"It's all in your head" might be one answer but that's the question, what plane or dimension is it? and why do we not see it anywhere externally?

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3. mistermann ◴[19 Apr 24 13:30 UTC] No.40086595[source]▶
Did atoms exist before they were discovered, or not until after they were discovered?

This question could be applied to a number of things historically, and may even be in effect going forward.

4. kromem ◴[19 Apr 24 14:05 UTC] No.40086983[source]▶
Reachable with the speed of light from what inertial frame?

Also, there's been some interesting progress regarding information about the inside of the black hole possibly leaking out in the Hawking radiation.

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5. BlueTemplar ◴[19 Apr 24 16:34 UTC] No.40088865[source]▶
Funny, just today I read about things like waves or energy being arguably on a "different plane of existence" than their medium/embodiment :

http://www.av8n.com/physics/black-box.htm#sec-plane-of-exist...

(Which made me realize how little I know about eastern mysticism...)

6. wiml ◴[19 Apr 24 17:06 UTC] No.40089316[source]▶
The speed of light is the same in all inertial frames.
replies(1): >>40090998 #
7. marcosdumay ◴[19 Apr 24 19:24 UTC] No.40090998{3}[source]▶
Distances are not.