Is Dark Energy Getting Stronger?

PBS Space Time

PBS Space Time

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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"
    #darkenergy #darkmatter #spacetime
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    سلطان الخليفي

    Am Vor 4 Monate


    1. Stan TheObserver

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

    2. HolyWrath

      I believe dark matter is ocilating.

    3. 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 .

    4. Faizan Shaikh

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

    5. 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?

    6. 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!

    7. 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.

    8. 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

    9. viod vue

      "The great courses plus" Plus what?

    10. 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. :-(

    11. Motesoul

      10:30 ZIPF

    12. jhwheuer

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

    13. Dobby Dazzler

      Always awesome, always inspiring. Thanks SpaceTime xxx

    14. 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!

    15. // nostromov

      Yeah, ok, but, it's "supernovaS"

    16. 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

    17. mastrtonberry2

      I like all the Star Trek SFX

    18. David Fuller

      Shamanistic Witch Doctor of Physics Jargon

    19. Accutronitis The 2nd

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

    20. Matt Woodruff

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

    21. 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 !

    22. 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

    23. Nicholas Pdx

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

    24. TGK_Llama YT

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

    25. Trev Ashton

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

    26. Philip Moran

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

    27. 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

    28. vivalafiaga

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

    29. 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.

    30. Matlockization

      Dark energy is not getting stronger but darker !

    31. 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?

    32. Brett Augustine

      Is that a cockmonaut on your shirt?

    33. GIJosh

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

    34. 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.

    35. Cerberus

      I think Entropy is definitely getting stronger.

    36. Arun Sasi

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

    37. Harry ToyShirt

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

    38. nope sorry

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

    39. 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 ?

    40. Dom Trussardi

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

    41. Jordan Bayless



      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.

    43. ofsinope

      That moment when he says "spacetime" at the end

    44. 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

    45. Sandy

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

    46. Jay Antani

      Cool Video!

    47. 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

    48. Ne, oder?

      12:33 says all about spacetime

    49. Sami Saieed

      Totally, An epic episode

    50. 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...

    51. Luke Tyas

      E Lusso is my next door neighbour, and one of the most wonderful humans in the Universe.

    52. Walt F.

      Could dark energy have a waveform? Could the expansion of space come in waves? An unaccelerated phase followed by an accelerated phase, followed again by an unaccelerated phase, and so on ad infinitum?

    53. SketchyJay o.o

      Could dark energy be caused by a layer of matter/charge which surrounds the universe. During the big bang this "shell" would have been expanded, possibly increasing the "space" between it and all other matter within the universe - reducing interactive forces. This could initially slow the expansion of the universe, however it's ability to expand without fracture could suggest 'elasticity' and would therefore recoil. Eventually this recoil would provide an inward pressure, while increasing the strength of interactive forces - increasing its pull on everything internal. This could therefore create the "illusion" that the expansion is accelerating when in actual fact space is in recession.

    54. kaczan3

      I love the music during the 14:41 anyone got a link for that?

    55. Blair Macdonald


    56. Mr Temporal

      Nice thumbnail

    57. Kickin Rocks

      Starting a band... Tommy Terror and the Big Rip Quantum Physic and the Maths Bonaparte and the Big Bang White Hole and the Dark Matter Particle and the Waves Entry Lovell and the 101's Tyson Swarm and the Suns 10 Billion Days to Die The Eight Planets Celestial Hot Bodies When Iron Collides Lifeless XO's

    58. Gsup7s

      Of course it's getting stronger. It's an unlimited free energy source. According to you.

    59. Potato Gang

      You know I don't really understand because I'm only 8 years old.

    60. JorDef

      I´m dumb, the earth is flat, there´s no cosmos there´s only god. We´re the center of all. No Jesus in this video. Because of all that I´m giving this video a dislike. Better go to church and spend money on crucifixes. You all will burn in hell!

    61. FalconPunch827

      Dark energy is a perfect metaphor for my father. Permeates through all existence but no one has a clue where it is.

    62. Sledcat

      Supernov eh!

    63. nolan412

      Big phase change?

    64. Chris Ritchie

      I discovered The Big Rip in my pants

    65. Mike Price

      I think part of the problem is we are using Euclid's yardstick instead of Mandelbrot yardstick

    66. Gold161803

      Take a shot every time the CMB graphic shows up in a Spacetime video

    67. Deep Recce

      Question..How do we know the Universe expansion is not slowing down? We know its accelerating only because the further we see the greater the red shift right? But how does it measure up over time, as in maybe in a 1000 years time we see minute change in the expansion vs the current measurement? Also the further we see, meant that we are looking nearer to the beginning of the Universe where acceleration and expansion is greater nearer to the Big Bang..isnt it only natural to read a greater red shift as we see further away or rather further back in time??

    68. GateMessenger

      The theory is a quasar is a black hole consuming matter at a continuous rate but that is not so. Quasars are actually old galaxies which contain a large amount of stars, plentiful and extremely close together. The older the galaxy is the brighter it shines. Black holes cannot devour matter because of the action that is causing gravity, mentioned in a previous comment. There was no big bang but a slow continuous growth. There is more gravity, matter, energy and space in the universe today than there was yesterday. There is more now than there was in the beginning when the universe did not contain gravity, matter, energy and space. Back then the universe only contained potential gravity, energy, matter and space in time.

    69. GateMessenger

      The cosmic microwave background radiation map is the result of a manipulation in data, thus unreliable for any study.

    70. GateMessenger

      No, a big rip will never happen because as new matter is made in space, see pair production and virtual particle theories, space increases in volume (dark energy). It is not being torn apart but increasing in volume like a balloon being filled with air. New particles are made when energy comes to a rest, i.e., m=E/c^2. This is why virtual particles appear to pop into existence in the sun's corona. See the newest ring discovered by astrophysicists orbiting Saturn. When new particle pop into existence in the sun's corona they make light, heat and pairs of particles (plasma). It explains why the sun's corona is millions of degrees hotter than it's surface. This is why stars grow in mass and size over time. Stars cannot 'burn up' over time because mass is constantly added to them. Yes, I know this is conjecture for now. Let's wait and see what the Parker probe discovers.