ferrdek
ferrdek t1_jarv0ep wrote
Reply to comment by mfb- in Why do cosmologists say that gravity should "slow down" the expansion of the universe? by crazunggoy47
>"Warped" does not mean "expanding". It's more of a local deformation
Lets assume we have some point in space and we travel through it twice. First time the space is empty and the second time some massive object appear on our path (for instance a star) and we travel close to it, going through space warped by its gravity.
is the time needed to travel from point A to point B in warped space longer than time needed to travel that distance through unwarped space? Or the opposite? Or there is no difference?
ferrdek t1_jarayvg wrote
Reply to comment by mfb- in Why do cosmologists say that gravity should "slow down" the expansion of the universe? by crazunggoy47
>That's a popular science analogy. Don't use it literally.
um, so what does it really means when scientists say that gravity warps the spacetime
>Albert Einstein proposed that massive objects warp and curve theuniverse, resulting in other objects moving on or orbiting along thosecurves—and that this is what we experience as gravity
https://www.science.org.au/curious/space-time/gravity
edit: what I'm saying if the bending of space we experience as gravity, we can experience simultaneous stretching of space as expansion
ferrdek t1_jar0rcj wrote
Reply to comment by mfb- in Why do cosmologists say that gravity should "slow down" the expansion of the universe? by crazunggoy47
> matter slows down the expansion of the universe
I can't understand it. If large masses like stars etc cause stretching of space, why not assume that galaxies, clusters and filaments also stretch space between them, which would cause the expansion of the universe? Process of transforming energy into matter would fuel that expansion of space on a large scale.
ferrdek t1_ja7bu4y wrote
Reply to Treaty of Versailles being ‘too harsh’ by -Mothman_
Treaty of Versailles might have been a reason for discontent but it was not the reason for Nazis coming to power, nor was Great Depression. Nazis were at first financed by German industrialists who payed for electoral campaigns and later also from abroad by very rich people and companies in the West including Henry Ford.
edit: what I mean that financing was decisive factor
ferrdek t1_j9lg4i1 wrote
Reply to comment by D-Juice in Women with satisfying relationships tend to have fewer chronic illnesses by BlitzOrion
it says that divorce rate in the group of seriously ill doesn't differ from divorce rate in general population.
Also, it doesn't says explicitly it's a man who files for divorce. It's an assumption that in all cases sick spouse is abandoned by the healthy spouse
ferrdek t1_j9jaifa wrote
Reply to comment by BlueJinjo in Dutch intelligence services have warned that Russia is "covertly mapping" key energy infrastructure in the North Sea, in preparation for possible sabotage attacks. by green_flash
I agree expecting NATO invasion on Russia (or even better Ukraine armed with western weapons invasion on Russia) is insane and dumb idea (too much video games or Hollywood movies) but if Russia can collapse because of war with Ukraine is another problem. Soviet Union collapsed partially becauseof their failed invasion on Afghanistan.
ferrdek t1_jasif3h wrote
Reply to comment by mfb- in Why do cosmologists say that gravity should "slow down" the expansion of the universe? by crazunggoy47
>That depends on where A and B are and what your trajectory is in the case with the star
The star is located between A and B the trajectory goes through gravitational field of the star. Through space "warped" by the star.
By "point" I mean region of space. English is not my first language, sorry for misunderstandings