Wtf is dark matter. There’s something out there that makes gravity not work the way we expect on a very large scale, and “dark matter” is a theoretical substance that makes the math work out properly. But the fact that such a huge portion of the galaxy’s mass is this hypothetical, undetectable thing makes it seem very hand wavy. The last experiment to try to detect dark matter that I’m aware of concluded with “we successfully didn’t detect anything” 😞 having to deal with dark matter feels like trying to study atoms before the discovery of the neutron. I hope we figure this out in my lifetime.
Dark matter might not even exist, all we know is that gravity-based predictions break down after a certain point. Dark matter is the just the most popular proposed solution where you essentially just add extra undetectable mass until it works. The distant second is Modified Newtonian Dynamics (MOND) or some variation of it, which is where you try to tweak the theories to fit observations instead. It has the same problem as dark matter where we keep coming up with better experiments which always fail to find anything.
There’s a similar problem at the opposite end of the scale spectrum too; quantum mechanics doesn’t play nice with our current understanding of gravity leading to the search for the “theory of everything”. This is why I personally lean towards the idea that it’s our theories that are wrong and not an undetectable mass, but this isn’t my field so my opinion isn’t worth much (especially since a majority actually working in the field lean towards dark matter as far as I can tell).
And dark energy for that [dark] matter ;)
In the depth of pandemic lockdown, after my roommate moved out to return closer to family, I was in my house alone for a month straight. One day I hear the tea kettle whistling on the stove.
It was the middle of summer, I hadn’t made tea in weeks. Maybe I bumped the stove control? But there shouldn’t have been any water in the kettle. And I hadn’t been in my kitchen for over an hour and it wouldn’t have taken that long for the water to boil had I put it on and just forgotten about it somehow. I keep my doors locked.
Idk, the only thing I can think of is the isolation really got to me that day, I put the kettle on and completely forgot I had done it five minutes later.
Was there any water actually in it or did you not check?
Maybe tinnitus or tv?
It was about half full of water and it was boiling.
So if there was nobody else there you must have done that and just blepped or been on autopilot. It happens lol
What kind of stove? Could you have bumped the knob and the kettle had water leftover from last time?
Carbon monoxide? really that seems concerning
Where did the matter/energy for Big Bang come from? On that note, what is outside the border of the universe?
And then where did they matter and energy come from for that universe. It’s turtles all the way down…
Whether or not George Mallory summitted Everest.
Mallory was a great climber. People who knew him think he had the ability. Another member of his expedition saw Mallory and his partner, Andrew Irvine, close to the summit, but not close enough to be certain whether or not they made it.
Neither man returned from the mountain. Mallory’s body was later found, many decades after he died. but Irvine was never seen again, dead or alive.
There are various other bits of circumstantial evidence, but the fact is we’ll simply never know for sure. I like to think they made it.
Tunguska Event:
What’s the mystery with this one? It’s a very interesting event, but isn’t it generally pretty well understood?
Generally considered a meteor air burst, but there’s no crater and no evidence so it’s still very mysterious.
Oh ok, thanks. Didn’t realise that, will need to read up on it.
Why aren’t the basic laws of mathematics clean round numbers? Why are pi and e irrational? What secret is hidden down in the depths of these numbers?
It seems to me that the concept the ratio of the circumference of a circle to the radius is a finite value. It’s cool that it turns out to be an irrational number for us but I think that’s more a statement of how we handle math than some mystical thing.
Isn’t nature lazy? Like everything is in search of equilibrium and once its optimized, saul goodman
What are things? What is energy? What is my soul? Where did it come from? Is it even in this spacetime, or is the body an avatar and I’m connecting into to it via some process? How was my soul created? Why do I experience rather than my body function solely as a biochemical robot? Where does my soul go when my body dies? Is there an end to eternity? If so, what happens or doesn’t happen? If not, how does change continue? What does my soul do until then? I understand life. I don’t understand experience.
One time I heard an assumption that every single electron is the same electron in different places and times. I asked a physicist what they thought of that idea. He thought for a moment and responded, “Would it even matter?” Sometimes I imagine that we are all the same person in different bodies living different lives. Every normal person, every genius, philanthropist, every monster, every slave, every billionaire, every dead fetus, every person I’ve dated, my parents,…we’re all the same person living in a different body going through every single experience of life. When I do that, everything seems so simple.
So would it even matter? Yes, because what if individuality is false? What if we’re all one thing, but the current structure of life doesn’t allow us to experience it as such so we incorrectly think that each individual medium of perception is completely independent? Giving everything to others would be selfish. Working as a team for the benefit of everyone would be the ultimate selfish move. We could stop all competition, treat each other with utmost compassion, and maximize our limited time in each body. But alas, the selfish versions of us are too underdeveloped in that dimension to let that happen just yet. I wonder what it would take for each of us to reach the understanding that we’re all the same soul.
I have a friend like you whom I love to send into the chasm that is his own mind. The physicist has the attitude needed to deal with these thoughts - does it even matter? Ultimately, until we know our existence is false, we might as well keep on appreciating what we experience, right?
How does the Universe expand? Isn’t the Universe the container space of all that which exists, where does it expand to?
I’m kinda partial to the fine-structure constant
Fine-Structure Constant (1/137): This dimensionless constant, approximately equal to 1/137, is crucial in quantum mechanics and electromagnetism. It characterizes the strength of the electromagnetic interaction between elementary charged particles.
It’s weird because the number ends up in places that should be thoroughly unrelated yet that’s one hell of it coincidence.
What caused the Bronze age collapse? Who were the Sea People?
Or Crab People
what the hell are these for?
The coin-verifying hypothesis seems compelling
Why not just make that out of a flat piece of metal, or even a plank of wood though? Why bother with the very complicated 3D shape that took a lot more work to make?
Are all the sides equal on this dodecahedron? Maybe its for multiple coin types?
Hiccups
where do socks go in the dryer?
