Is Dark Energy Getting Stronger?

  • Am Vor 3 Monate

    PBS Space TimePBS Space Time

    Dauer: 18:22

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    The power of Dark Energy may be increasing as the universe ages. Subtle clues are emerging that the accepted model for the nature of dark energy and dark matter may not be all that. We saw the first such clue recently in our recent episode on the Crisis in Cosmology. Today we’re doing a Space Time Journal Club to reveal another clue. We’re looking at a new paper in Nature Astronomy, “Cosmological constraints from the Hubble diagram of quasars at high redshifts” by Risaliti and Lusso. It hints that the cosmological constant may not be so constant after all. In fact it may be increasing. If this is true, then our prediction for the future of our universe looks VERY different, and may involve the entire universe tearing itself to shreds at the subatomic level in the Big Rip.
    On this edition of Space Time Journal Club we look at:
    Risaliti & Lusso (2019) "Cosmological Constraints from the Hubble Diagram of Quasars at High Redshifts"
    www.nature.com/articles/s41550-018-0657-z
    #darkenergy #darkmatter #spacetime
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Stan TheObserver
Stan TheObserver

Can or will dark energy rip itself to nothingness one day?

Vor Tag
HolyWrath
HolyWrath

I believe dark matter is ocilating.

Vor 3 Tage
jackay k
jackay k

Dark matter and dark energy are real but it's for heaven or maybe earth also not for humans may be it's like flesh of heaven but it's also exist in earth another form or face or colour if it passes by you you feel massless Ness vaccum nausea in your mind that's what we know as a Muslim but I won't tell the full truth to call me mad religion dog .but it's not hand of god or any any type of part of god .

Vor 5 Tage
Faizan Shaikh
Faizan Shaikh

I woke up. I watch new video and I start my day

Vor 7 Tage
Kevin McMahon
Kevin McMahon

It is strange that Space-Time is expanding in the space between the Galaxies, but not the space within the atom. Are gravity wells the least likely place to find Dark Energy and Dark Matter?

Vor 7 Tage
Adam Watts
Adam Watts

I love how well you brought an academic journal article into means that most layman like myself with just a general interest in physics and cosmology can understand! Thank you. please do some more!

Vor 11 Tage
N L
N L

There's a lot we don't understand, but it's pretty clear that dark energy is not a constant. It doesn't mean it will increase forever though.

Vor 13 Tage
Christian Anderson
Christian Anderson

What we see in the visible observable universe is what they was millions and billions of years ago at this current time now everything must be gone anything that is 500 million light years or more away think about it if light took a half a billion years to get here or 100 billions light years away those objects no longer exist in theory maybe that's why we see the expansion of the universe speeding up we could be in a totally empty cold universe where the light we see from so far away those objects in are currently space time no longer exist in theory

Vor 15 Tage
viod vue
viod vue

"The great courses plus" Plus what?

Vor 19 Tage
Charles Rockafellor
Charles Rockafellor

The material is good material, the presentation is professional and concise... but while the words are dead-on, the cadence and body language argue from rhetoric. PBS Space Time always _feels_ like a snake oil sales pitch, even given the otherwise accurate data. :-(

Vor 22 Tage
Motesoul
Motesoul

10:30 ZIPF

Vor 23 Tage
jhwheuer
jhwheuer

So in other words... if something changes the light of the standard candles unexpectedly, all our measurements are off...

Vor 24 Tage
Dobby Dazzler
Dobby Dazzler

Always awesome, always inspiring. Thanks SpaceTime xxx

Vor 26 Tage
Glenn B
Glenn B

Those two Nobel winning teams that 'wrote the text book on dark energy' (as you put it) in the early 90s, overlooked the most ubiquitous cosmological quality, neglecting to include it in their calculations, which would have shown that universal expansion was SLOWING not increasing. Yes now everyone takes their findings as Gospel. What a cosmological cock up!

Vor 27 Tage
// nostromov
// nostromov

Yeah, ok, but, it's "supernovaS" https://youtu.be/tAtVgHvt05M?t=782

Vor 27 Tage
Mr Mellon
Mr Mellon

I wonder if space isn't expanding, but "falling" outwards. Local gravity may have slowed the falling rate early but just like gravity from matter, spacetime is falling like the center of gravity is just outward. I wonder if that could be calculated

Vor Monat
mastrtonberry2
mastrtonberry2

I like all the Star Trek SFX

Vor Monat
David Fuller
David Fuller

Shamanistic Witch Doctor of Physics Jargon

Vor Monat
Accutronitis The 2nd
Accutronitis The 2nd

This channel never fails to expand my knowledge of our universe!

Vor Monat
Matt Woodruff
Matt Woodruff

You guys have great content but a terrible intro song. You need something more pumped up and melodic.

Vor Monat
ijams sum
ijams sum

They make incorrect assumptions looking back thru time 14-15 billion years ago matter and the laws of physics operated the same as now with no dilation ? Looking back at the early universe it should be expanding fast from the big bang and slowed down later by gravitational forces of mass when gravity was established ! There is no dark matter energy only the universe before physical laws were fully established and what they see happening back then is not the laws today,  change set in over some time ! The early universe had little matter to absorb the great energy from the beginning , later the mass assumed physical laws of attraction and absorbed the energy to slow down the Galaxies enough to be stable ! What they are seeing is not even happening today , its 15 billion years ago ! No intuition in science is used only cold incorrect math lacking all the laws of the universe ! Only some laws are known , we are infants at cosmology as intuition has been left behind and no insight is used in science academia in cosmology today and they are more lost than they ever hoped to be lol ! Corona Fusion is the correct theory of our Sun not core fusion and the data is right in front of them but they are blinded by a failed theory to protect science academia from being very wrong from the start ? Cosmology is a farce in many areas and it takes genius to invent a invisible energy dark matter to explain away there failings because you cannot disprove the invisible ! See how science academia works , so now they say it takes 40,000 years for photons at our Suns core to reach the surface of the Sun to explain away the very low  surface temperature on the Sun ???? Genius to invent a theory to protect your failed theory so the public cannot see the mistaken theories in our textbooks ? Once you wake up and see the truth you see how little we know and how what has been portrayed as fact is false science and still in textbooks ! No morals allowed because science must be protected from itself by inventing theories that cannot be disproved ! Dark Matter is just such a invention , because they are lost without a clue of intuition ? Dimensional travel and traveling past the speed of light is possible , but you must create a field around a craft the blocks subatomic entanglement that lets the craft have zero mass in our space dimension and blocking our physical laws is all it takes but few people can even think this is possible ? Once you see a UFO your mind opens up very much , and the reality sets in we are to be deceived completely from the truth as science has zero morals !

Vor Monat
Chad Davis
Chad Davis

I think that there could be a possible error in the interpretation of the redshift increase from the quasar measurement, the dark energy being observed getting stronger around using these quasars could be the black hole expanding space by condensing energy to negative energy. There must be a way to measure this dark energy increase in relation to a few relative nearby black holes to one another and the red shift observed between there varying masses and amount of matter being consumed via the size of its accretion disc, assuming that something will be observed by this would give us an approximation of how much new space/dark energy is being created from the amount energy being converted in s black hole

Vor Monat
Nicholas Pdx
Nicholas Pdx

How are you accessing my phone? I see you too..

Vor Monat
TGK_Llama YT
TGK_Llama YT

This is the time that we need Thanos to get on the good sid

Vor Monat
Trev Ashton
Trev Ashton

Out of curiosity, Has dark matter been found in galaxies that DONT have super massive black holes?

Vor Monat
Philip Moran
Philip Moran

Gravity can be explained if everything expanded by 1/1000th per second!

Vor Monat
Kane Morison
Kane Morison

Dark Energy maybe from the collapse of the first big 3 stars into black holes theses black holes having eaten all the local matter around. Collapse explode fragment into pockets of collapsing Matter Dark Energy just a guess way off

Vor Monat
vivalafiaga
vivalafiaga

What if the entire universe is simply descending into an unimaginably huge black hole?

Vor Monat
Bangla Desh
Bangla Desh

"Dark energy" is just the positive curvature of spacetime in the absence of mass on large scales directly proportionate to the density of mass on galactic scales. It's kind of counter intuitive but I've done all the calculations and wrote 2 papers on it, but 6 journals have refused to publish my work as they're invested in other theories. True story.

Vor 2 Monate
Matlockization
Matlockization

Dark energy is not getting stronger but darker !

Vor 2 Monate
Derrick Bommarito
Derrick Bommarito

What would the universe look like (besides very dark) to the last remaining animals when a big rip changes the universe enough to become observable? What new chemistry might result that becomes dominant over what I would expect to be a very long period of slow atomic tearing? Does the big rip result in everything inevitably turning itself into WonkaVision static?

Vor 2 Monate
Brett Augustine
Brett Augustine

Is that a cockmonaut on your shirt?

Vor 2 Monate
GIJosh
GIJosh

Next April 1st, they need to make a video that asks a question, and answers with "yes" or "no", then end the video.

Vor 2 Monate
Waizwaid Arenosa
Waizwaid Arenosa

I love this guy; I don't believe he is human; he is too advanced. Nevertheless, I love him. I can listen to him forever.

Vor 2 Monate
Cerberus
Cerberus

I think Entropy is definitely getting stronger.

Vor 2 Monate
Arun Sasi
Arun Sasi

Very hypothetical question! Assuming lambda is not uniform across space, will relative expansion of space have relativistic effects on each other?

Vor 2 Monate
Harry ToyShirt
Harry ToyShirt

So much for "dahk" energy. Someone send a boatload of R's to the Brits.

Vor 2 Monate
nope sorry
nope sorry

spacetime tearing itself to shreds on the subatomic level... well that certainly would be a big R.I.P

Vor 2 Monate
Gabrielle Grandcamp
Gabrielle Grandcamp

WHAT IF there was no dark energy at all, like the gravitation isn't a force but more like a propriety of the structure of the space time universe, I'm wondering, what if what we call dark energy is in fact the response of the space time fabric to gravity, like if I put a finger on a baloon, if i press hard, outside this zone of the pressure caused by my finger, the balloon is expanding, so maybe, the expansion is accelerating because there are nothing to stop this expansion, unlike the balloon. So the filaments of galaxies is in fact valleys in a 3d space, caused by the mass of the galaxies themselves, galaxies "squeezed" by monts of void (or less dense universe) created in consequence of their mass pushing on the space time fabric, like fingers on a balloon ? (sorry I'm french, I hope I'm a bit comprehensible) and it's like an answer of the period the universe didn't expand, the space was not enough big to permit the creation of valleys caused by gravity and maybe, maybe, the acceleration of the expansion is caused by what black holes do in the space time fabric, an expansion fuelled by the infinite mass in the center of the black holes ?

Vor 2 Monate
Dom Trussardi
Dom Trussardi

If there was a "NIgga...the hell you talkin bout?" meme, this guy would show up in half of them.

Vor 2 Monate
Jordan Bayless
Jordan Bayless

WE'RE ALL GONNA DIE!!!

Vor 2 Monate
ALT SOLUTIONS LIMITED
ALT SOLUTIONS LIMITED

Any energy has quantitative and qualitative characteristics. Stronger or weaker is just the degree of impact in a certain place on a certain object. It is more reasonable to talk about the quality of energy and its use in real life. Accordingly, management of this energy.

Vor 2 Monate
ofsinope
ofsinope

That moment when he says "spacetime" at the end

Vor 2 Monate
Jesse Mai
Jesse Mai

show me the math, intuitively I disagree on both experimental and theoretical platforms... show me the math for corrected theoretical measurements and the math for the theory behind it

Vor 2 Monate
Sandy
Sandy

i feel intelligent after clicking this video...even though I don't understand what he says

Vor 2 Monate
Jay Antani
Jay Antani

Cool Video!

Vor 2 Monate
James Alexander
James Alexander

maybe the entropy of the universe is increasing which would explain it's expansion just like a piece of metal or being that this may only be a short period of rapid expansion; somewhat like an oven that may sit at say 350F for several seconds or more before actually reaching the next digit in temperature. Of course in reality, this may be a period of chaos, destruction & growth in the universe. People often misinterpret current events because they perceive reality to be steady without considering acceleration/deceleration

Vor 2 Monate
Ne, oder?
Ne, oder?

12:33 says all about spacetime

Vor 2 Monate
Sami Saieed
Sami Saieed

Totally, An epic episode

Vor 3 Monate
John Foyer
John Foyer

So this is the cosmic error He spoke of. Hm...well let's say I had a...conversation with a...deity that claimed he was the...creator. he spoke of this miscalculation that was originating from the effects black holes were having on the space time weave of the fabrics within the universe. The miscalculation was the gravitational effect of the first moments when particles first formed. The excess build up of particle formation led to the formation of black holes and the model of creation was a constant spherical shape that would expand and then retract. However o proposed a new algorithm to the model that would redistribute the excess particle energy to instead imbed themselves into the cosmic microwave background and using the energy generated by the particles and motion into and along the CMB to fill in the inconsistencies due to gravitational effects, then using the energy remainder to interweave itself with the fabric of particles stretching the borders of the universe infinitely outward, reinforcing the newly formed particles and allowing them to settle into the formation of matter without the gravitational build up the less to black hole formation. It was about thay time I woke up spitting up the lung fluid that had built up in my lungs while I was sleeping that night...

Vor 3 Monate

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