Recent comments in /f/space
Hadrollo t1_ja8hxa1 wrote
TL;DR: it's easier to spot rocks on a white background.
I found the article interesting, but I was kinda hoping for it to be something more complex, maybe about orbital planes and whatnot.
RollinThundaga t1_ja8hlng wrote
Reply to comment by LouQuacious in Why are Most Meteorites Found in Antarctica? by ChieftainMcLeland
And it's a cold desert, with little precipitation and minimal non-glacial erosion. So they'll just last longer in a recognizable form.
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Toebean_Farmer t1_ja8hfmy wrote
Newest theories have hypothesized a “vacuum energy” which sounds like what you might be talking about in part A: it acts sort of like the opposite of gravity, where the energy of a black hole would push matter away from it, at a certain point.
Part C seems to be coming up on black hole cosmology and unfortunately would be damn-near impossible to prove.
OddClass134 t1_ja8hbtw wrote
Reply to comment by praetorion999 in How to make a model of dark matter and energy? by Poise-on
I'm not an expert, but I did attend a talk with an expert last week. It seemed his* theory is sort of neither, but rather that general relativity models just aren't being applied correctly. So underlying theory is the same, dark matter doesn't exist, but the math isn't mathing.
Edit for clarity
I_Heart_Astronomy t1_ja8h6vh wrote
Reply to comment by ManikMiner in My two year progress shooting Jupiter, using the same $300 telescope! by theillini19
The side of Jupiter definitely influences how much detail is visible, but I will say that OP's previous images were WAY over-sharpened. It made the planet's features look more strongly contrasted than they actually are. His third image is processed to look more natural.
This is a pretty close simulation of what Jupiter actually looks like through the eyepiece of a modest sized telescope: https://i.imgur.com/QZzCNoT.jpeg, contrast is much more subtle, so OP's third image is more closely aligned with what Jupiter is really like.
Anonymous-USA t1_ja8fy6u wrote
The universe is really “filled to the brim” on the very large macro level; you look at a galaxy and it looks very populated, but the actual distance and influence between individual stars in minuscule. Between individual galaxies even less. Matter in space is very minimal. If you’re referring to the fabric of space-time itself, then that is everywhere. But hydrogen, the most abundant element, is sparse. Free energy is weak — imperceptible gravitational ripples and microwave radiation.
Yours seems to be hypothesis-by-analogy, ie. water is a medium, then why not space?. Analogies are good for conceptualizing things and simplifying concepts, but not for workable theories. As kindly as I can say, I think that is the case here.
10_pounds_of_salt t1_ja8fxdp wrote
I'm not that knowledgeable on this topic but I see a few issues with this.
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What I'm taking from this is your trying to say that dark matter is the manifestation of space time overlapping on itself which is just nonsensical.
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What do you mean "overflowing". space dosent have a size. In order for this to work there would need to be a greater reference point which would encompass the entire universe (at least I think that's how it works) which dosent exist.
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What would that overflow appear to us as?
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Space time cant warp itself
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The wave idea just does not make sense.
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How could the expanding universe create mirages? And what "physical manifestations" would occur.
I'm pretty sure some one more knowledgeable can go into the details.
Survies1 t1_ja8fu4o wrote
Have you looked at Saturn through a home telescope yet?
[deleted] t1_ja8fla7 wrote
Reply to comment by Poise-on in How to make a model of dark matter and energy? by Poise-on
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lIllIllIllIllIllIII t1_ja8f7fo wrote
Such a cool experience, right? I remember that feeling of awe seeing the night sky without light pollution for the first time, and it's been just as magnificent every time since.
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ExtonGuy t1_ja8f41k wrote
Assume this "wave" hypothesis was correct, what would be be able to observe? Assuming this hypothesis was wrong, what would we observe? And what is the difference? If there's no difference that you can tell, then this isn't science.
Toebean_Farmer t1_ja8eupq wrote
Reply to comment by ferrel_hadley in How big was the point of dense energy before the Big Bang? by ClassicSpurzy
Unless it was flat, which many cosmologists believe it is.
Poise-on OP t1_ja8enl1 wrote
Reply to comment by ChrisARippel in How to make a model of dark matter and energy? by Poise-on
Thats just incredible, thank you so so much
[deleted] t1_ja8eh91 wrote
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[deleted] t1_ja8eey6 wrote
Reply to comment by farmallnoobies in My two year progress shooting Jupiter, using the same $300 telescope! by theillini19
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ChrisARippel t1_ja8dq25 wrote
Have you considered making a the Cosmic Web?
Though many people have heard of Dark Matter and Dark Energy, I suspect fewer people have heard of the Cosmic Web. The idea will be new.
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Matter and dark matter condensing into filaments. Where filaments cross galaxies appear.
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Dark energy expanding voids between the filaments.
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The Cosmic Web is impressively BIG.
Building the Cosmic Web on a computer. Part 1
Millennium Cosmic Web Simulation Project
There are more cool videos of Cosmic Web, e.g., tours through the web, etc. for a presentation.
Articles
Possible photograph of Cosmic Web
Cosmic Web could be hiding new physics
I think you could also imitate a Cosmic Web with cotton fibers, glue and paint.
Good luck.
cheetonian t1_ja8dkbp wrote
Reply to comment by Express_Helicopter93 in Hypothesis on dark matter and dark energy using a water as a reference. by Syd-1-772453
People in general think they are waaaaaay way way way more knowledgeable about any given subject than they actually are. It’s partially human nature, and partially a terrible educational system
[deleted] t1_ja8djne wrote
Reply to comment by Express_Helicopter93 in Hypothesis on dark matter and dark energy using a water as a reference. by Syd-1-772453
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Express_Helicopter93 t1_ja8cnjz wrote
Can we do some basic research before we post inane thoughts to social media? Is that so hard to ask, humanity?
[deleted] t1_ja8bumu wrote
Reply to comment by myrrhmassiel in My two year progress shooting Jupiter, using the same $300 telescope! by theillini19
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EduardoVrd OP t1_ja8bl81 wrote
Reply to comment by myaccc in Today's moon with daylight, southern hemisphere shot by EduardoVrd
Canon T6+102mm telescope. 1/200 ISO200
[deleted] t1_ja8ahns wrote
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Threedognite321 t1_ja8i8q3 wrote
Reply to Why are Most Meteorites Found in Antarctica? by ChieftainMcLeland
The earths magnetic waves grab it and guide it that way.