Osmone Everony
Osmone Everony

@PBS Space Time So all space between galaxies is filled with dark energy and therefore antigravity? What would happen to a hypothetical spaceship which left our galaxy? Would it accelerate without any thrust and would it even go beyond the speed of light or does mass dilation still apply in a field of antigravity? 🤔

Vor 7 Stunden
Simone Spinozzi
Simone Spinozzi

One thing i never understood. Why is time never mentioned in these discussions? Because... uhm... we know gravity affects time. And it often seems to me that the fact we see dark matter and dark energy only in stuff that is very far away could be just explained in 2 ways: (1) time is either slowing down or speeding up as stuff gets farther and farther therefore the hold of gravity is more and more tenuous... and we see things as they happened at a given speed of time as it gets "traffic jammed" or "traffic unjammed and sped up" into us once it tries to leave a galaxy and enters ours. The gravitational lensing itself of galaxies and stuff does affect time therefore slowing time in the vicinity of galaxies but... we only perceive space via light... but light lacks any way to tell us how it was affected by the speeding and slowing of time as it travels through more and less gravity-affected areas. Unless i am missing something. Am i missing something? I am quite sure that anybody else already thought of this... but i never see it mentioned anywhere. So... is it just so trivial it gets auto-accounted for in all the calculations?

Vor 8 Stunden
Dav Ka
Dav Ka

And i always thought Milla Jovovich was the 5th element. She is so quintessential.

Vor 8 Stunden
Darren New
Darren New

Looking forward to an episode on how the JWST is messing with the idea of big-bang causing expansion.

Vor 8 Stunden
justin lowe
justin lowe

Sounds like dark gravity

Vor 8 Stunden
Wes Bult
Wes Bult

Your "negative pressure" is explained as "new" space bubbling into existence everywhere in the universe. Let me know if you have any questions.

Vor 8 Stunden
Wes Bult
Wes Bult

Gravity's influence on expansion is limited to the speed of light, but dark energy's expansion is NOT limited to the speed of light. Therefore, dark energy wins.

Vor 8 Stunden
opel manta mechanic
opel manta mechanic

Riddick is awesome, anyway I really like the Penrose ccc idea . Once it's all going at more than light speed theres effectively no mass there and no time ,it will have no choice but to bang again. The rip implies there will be nothing next ,I'm not sure about that , everything else is recycled why not the universe.

Vor 8 Stunden
Sunil Everest
Sunil Everest

Everyday these hurts my mind 😅 Does space really allow matter to move anywhere on its free will ? & if we move along space in free will may lead to discovery of higher dimensions ? Conservation of energy for the new expanding space ? Does immense matter really causes the spacetime to be bent or just collection of spacetime at a single point due to presence of matter (interacting with Higgs field) causes space time to be bent ? What if gravity is just effect of pressure difference on concentrated matter in spacetime ?

Vor 8 Stunden
MaxBrix
MaxBrix

Question - Since expansion increases over time the closer galaxies are expanding faster than far ones that are older? So the farther away we look the less expansion there is because we are looking at older galaxies and the expansion is accelerating? It's hard to find a simple explanation of the observation without interpretation.

Vor 8 Stunden
OArsalan
OArsalan

How does Current flow opposite direction to the flow of charges? de-film.com/us/shortseDCujTWa85g?feature=share

Vor 8 Stunden
Todd Starbuck
Todd Starbuck

Having a few dots of Prime helps with managing quintessence.

Vor 8 Stunden
Marik Zilberman
Marik Zilberman

If the Quintessence requires a Quantum Field, and such a field produces a particle, could this particle be the mysterious Dark Matter?

Vor 8 Stunden
Nutsack
Nutsack

I'm no scientist but I think dark energy is just magnetic fields connecting with each other. Actually there is only one magnetic field in the universe but I don't know what the separate 'fields' are called. Magnetospheres?

Vor 8 Stunden
George Lionon
George Lionon

Could also "Dark Matter" be just a field, and not non interacting particles? (we still would have to detect the field particle tough, maybe it's just to big)

Vor 8 Stunden
Andrew Engelhart
Andrew Engelhart

Or perhaps its related to time. Think of it like a memory chip on a computer - the more time goes by, the more information there is, the more memory needed to hold/envelope the information. So once the red death occurs followed by a cold death energy less universe and [information] begins to actually decreases (entropy (thing about entropy is that it needs a boundary definition for the rule of alwaysincreaseing chaos; until the boundary is all encompassing with the other side being similar to white hole/black hole relationship leaving the ever accelerating expanding universe to then contract quickly on itself (entropy decreasing) and all the ultra tiny energy dead bits collapse on each other to some central point leading to another big bang event and the dark energy/matter gets converted back to normal matter and with gravity regrows the universe as we know it. Essentially inverted loops. Think about the convergence of two stars or multiple planets pulled into black holes (objects converging to a single point). mass with movement is momentum and because of the mass of the swirling objects there is not a perfect draw to that single point of pull all at the same time, instead they blow past the pull point and then get pulled back in in smaller loops until finally converging. So if the mass were ultra tiny or nonexistent then the associated momentum would be gone and all specs could converge on a central pull point to all impact as the same time and create a much bigger bang.

Vor 8 Stunden
Ludwig Jeremias Glögglifrosch
Ludwig Jeremias Glögglifrosch

Imagining the force of dark energy as a field finally helps me understand how space isn't expanding everywhere, with the galaxies just flowing back together. Does that mean the angle between galaxies change, when there's more void on one side that the other? And is quintessence the same as the inflaton field?

Vor 8 Stunden
Brian Messemer
Brian Messemer

Matt and Space Time team: I'm not a scientist, I'm a music teacher. I don't fully understand most of what is discussed on this show; especially the math. But just because we don't fully understand something doesn't mean we can't be fascinated by it and appreciate it. I feel like a child listening to adults when I watch Space Time, and I mean that in good way. What a humbling and satisfying thing, to be able to even partially follow discussions concerning the farthest edges of humanity's understanding of the universe. Thank you, Space Time!

Vor 8 Stunden
Ron Wells
Ron Wells

VSL( variable speed of light ) will have a flat universe, so no need to expand the universe.

Vor 8 Stunden
Linus
Linus

Equations on paper...that's how the universe works. So glad we have scientists in labs to hold it all together! ;)

Vor 8 Stunden
David
David

In other words... de-film.com/v-video-Dz8dxbRW5u8.html

Vor 9 Stunden
karlthetrader
karlthetrader

Is there anything at all which is not a quantum field???

Vor 9 Stunden