I have long felt that a problem with dark matter is the result of dimensions we can not perceive except in theory where gavity waves transcends and is affected by both dimensions. It might even be a field or soup if you will of quarks and not matter as we experience it directly.
MechRxn on
This seems way too simple an explanation to not have already been thought of / tested in some capacity.
Andromeda321 on
Astronomer here! TL;DR- don’t bet the farm on this one just yet.
Now, it’s very well shown that the universe is accelerating in its expansion over time, and [dark energy](https://en.wikipedia.org/wiki/Dark_energy) is the catchall term described as what’s driving that- in order to get the expansion we see, it has to make up 70% of the “stuff” in the universe. Obviously, this is weird, especially since we don’t know what it is- it’s a hard problem to measure in detail! Enter, this paper, which is basically this paper is one of a dime a dozen papers every year that finds some theoretical thing about dark energy to quibble about. (At least, I think [this](https://academic.oup.com/mnrasl/article/537/1/L55/7926647?login=false) is the one we are discussing, this article sucks and doesn’t link it.) In this case, they claim that time dilation is different in voids than it is in a galaxy, and that’s what causes the dark energy effects we see.
Now, first off this is not a new idea- it’s been proposed for decades- and to date everyone who’s done the calculation concluded that a time dilation difference in a void would be pretty insignificant. These guys OTOH have pretty different conclusions from their math, which I can’t really follow but means I’m gonna wait awhile for outside confirmation before I accept this as correct.
Finally, it’s worth noting that even then this paper isn’t doing away with the standard model of dark energy- they’re just arguing their *one* data set is consistent with dark energy, *and* with their theory. There are many, many other lines of evidence indicating the accelerated expansion of the universe is a thing, and they’d need to then do this calculation on some of those other ones to show it holds up. So this headline is wrong- the study does NOT claim that dark energy doesn’t exist, just for their one data set another model COULD work and they can’t distinguish between the two. The paper is pretty clear on this! The headline though sure isn’t.
penelopiecruise on
let me guess: it’s champagne all the way down?
hippest on
Humans are slowly, but steadily, realizing that our perception of time is seriously flawed.
YeastGohan on
Dark energy and dark matter were always just blanket terms for “we don’t know.”
I never thought it was real.
Smart_Doctor on
What if we live in a simulation? Areas of space with more “stuff” in them need to move through time slower because dealing with the numbers to make the simulation work takes more time there. Kinda like when a bunch of players in Eve Online go to the same zone for a war time starts moving really slowly there.
SHKMEndures on
Did anyone else immediately think Vernor Vinge’s “Zones of Thought”?
idiotsecant on
any headline containing the phrase ‘huge if true’ is automatically going to be a low quality clickbait junk article.
14 Comments
Alright — who’s going to dumb this down so even a simpleton like me can get the gist and say, “ah, yes… of course…”
Well how can that be if NASA literally have a device called the Dark Energy Camera.
Checkmate, astrologers.
/s
Doesn’t this mean we’re back to not ha[](https://alb.reddit.com/cr?za=91VFlzQSrQHSh4NXhJ8o_xuO9FXIXEqlbhCgSm37vIsQUoqA2G3y7-H8eZ8a-mM4fRxwtZZr_GjsyBr5IwftNg3N65j-eqZVIM87_4H5B5Phuk0YrIhl9hnZA3tjVrabbYxcvbn1apDuOINh8U0noP2_xQgXSqQzIDKqkZvXFpqm98_N5BNDbLEn8qG_4UqA6TuyL7U_IW6cotvGeIF05TLE__jMuXseMgW29MuvK8XKoMTCHeHppo5XwAgGh4nDnfvNQyyvMhjzwPXaXpowCl27IJs4VuvhGQVpX798XtT4QuUBXoXhNIuCnwJLcfgf8KlfUNpSgMHjOD3hmNC44fT4eTmehI0cYOQJXF_sl8YWeWQo2rAK5zb8u3-9yh7thKPYJ8nuxFbUmAnEltqm7e2dCvXICzNRTf8GkCRYj_5zMdsRs2hk-wvg3Qa6Wjvamq9SQ2L4W4ChsaSuR8iy68tGXuoroQ6YdnAuSWwHLzKuQnA&zp=OGMCICMthruiM7PI0jP0z5_Ke-aDpzSKXoKQCNHKDM1p79CYh8HUIRFZaIMFMk00TvD7WXi8lOHzSDH9kleEIZ1S4l4lneXdwM_5lxZ_UlzQnu5dILoJ3TQnPGt1gCQWruEG2N5Khp7pZCTHfdCucrgNT41ie0-OzHZ71a1atavC0x6ucn0f7auNqiOSZ8T3HIcQeawiZ1WtlwW2TGJlaC22oys-csEt7QErk1wKLq2Mok55X7_69TSQkDL2NYL-yunXLO1NU5Ml3RbWiJ8wmzyelbB7wgJY74lMOrG8zlXno46uMEY_NkhLpENuaoTiKbkgekOqyeSVh6bvpcow1qVLX1yIbHKv4TagBzM7C6AZG9IfPmOzoJ5X_L_SLvQ7tyhqAS0DNYJBICKIf7XRjAolDvlDs9Su9jAwPFEAG0IV2mWt9Wz76ub5pQr4_JVklxU3PKCV_-aOzA)ving an explanation why the galaxy appears to spin as a disk.
damn now what will sci-fi writers use to fuel their warp drives?
Timescape cosmology if you wanna read more about the underlying theory
https://en.wikipedia.org/wiki/Inhomogeneous_cosmology
I have long felt that a problem with dark matter is the result of dimensions we can not perceive except in theory where gavity waves transcends and is affected by both dimensions. It might even be a field or soup if you will of quarks and not matter as we experience it directly.
This seems way too simple an explanation to not have already been thought of / tested in some capacity.
Astronomer here! TL;DR- don’t bet the farm on this one just yet.
Now, it’s very well shown that the universe is accelerating in its expansion over time, and [dark energy](https://en.wikipedia.org/wiki/Dark_energy) is the catchall term described as what’s driving that- in order to get the expansion we see, it has to make up 70% of the “stuff” in the universe. Obviously, this is weird, especially since we don’t know what it is- it’s a hard problem to measure in detail! Enter, this paper, which is basically this paper is one of a dime a dozen papers every year that finds some theoretical thing about dark energy to quibble about. (At least, I think [this](https://academic.oup.com/mnrasl/article/537/1/L55/7926647?login=false) is the one we are discussing, this article sucks and doesn’t link it.) In this case, they claim that time dilation is different in voids than it is in a galaxy, and that’s what causes the dark energy effects we see.
Now, first off this is not a new idea- it’s been proposed for decades- and to date everyone who’s done the calculation concluded that a time dilation difference in a void would be pretty insignificant. These guys OTOH have pretty different conclusions from their math, which I can’t really follow but means I’m gonna wait awhile for outside confirmation before I accept this as correct.
Finally, it’s worth noting that even then this paper isn’t doing away with the standard model of dark energy- they’re just arguing their *one* data set is consistent with dark energy, *and* with their theory. There are many, many other lines of evidence indicating the accelerated expansion of the universe is a thing, and they’d need to then do this calculation on some of those other ones to show it holds up. So this headline is wrong- the study does NOT claim that dark energy doesn’t exist, just for their one data set another model COULD work and they can’t distinguish between the two. The paper is pretty clear on this! The headline though sure isn’t.
let me guess: it’s champagne all the way down?
Humans are slowly, but steadily, realizing that our perception of time is seriously flawed.
Dark energy and dark matter were always just blanket terms for “we don’t know.”
I never thought it was real.
What if we live in a simulation? Areas of space with more “stuff” in them need to move through time slower because dealing with the numbers to make the simulation work takes more time there. Kinda like when a bunch of players in Eve Online go to the same zone for a war time starts moving really slowly there.
Did anyone else immediately think Vernor Vinge’s “Zones of Thought”?
any headline containing the phrase ‘huge if true’ is automatically going to be a low quality clickbait junk article.