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Where Did Dark Matter And Dark Energy Come From?

  • Where Did Dark Matter And Dark Energy Come From?


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    Where Did the Universe Come From? And Other Cosmic Questions: Our Universe, from the Quantum to the Cosmos

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  • What is Dark Matter and Dark Energy?


    What is dark energy? What is dark matter? Well, if we knew exactly we would have a nobel prize – we know that they exist though. So what do we know about those strange things?

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  • Neil deGrasse Tyson: What is Dark Matter? What is Dark Energy?


    Neil deGrasse Tyson offers a comprehensive analysis of what dark matter and dark energy could be. With his usual wits & style he explains all known hypotheses for what the mysterious substance called dark matter might be. Neil deGrasse Tyson, the most well known astrophysicist of our era if not of all time also asks a mind boggling question about the origin of dark matter. He entails how dark matter or more fittingly dark gravity could originate from other universes in the multiverse.

    Normal matter consists of the atoms that make up stars, planets, human beings and every other visible object in the Universe. to precisely assess the age of the universe to be 13.77 billion years old and to determine that atoms make up only 4.6 percent of the universe, with the remainder being dark matter and dark energy.

    Neil deGrasse Tyson tells the story of the WMAP and how it enriched our understanding of the universe. This mysterious substance called dark matter, makes up the bulk of a galaxy's mass and forms the foundation of our Universe's large-scale structure. Because dark matter does not emit, absorb, or reflect light, its presence is only known through its gravitational pull on visible matter in space.

    The universe is far from being fully understood. There are many different theories as to what dark matter and dark energy actually are, but scientists have been searching for these elusive entities for decades. Recently, new methods of detecting these entities have been developed, which could lead to a significant breakthrough in our understanding of the universe.

    #neiltyson #darkmatter #science

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  • The Universe: Mysterious Dark Matter Explained | Full Episode | History


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    Scientists have no idea what it is, but Dark Matter and Dark Energy make up 96% of the Universe. Dark Matter is everywhere. It passes through everything we know on earth at billions of particles every second, in Season 2, Episode 6, Dark Matter. #TheUniverse
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  • The search for dark matter -- and what weve found so far | Risa Wechsler


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    Roughly 85 percent of mass in the universe is dark matter -- mysterious material that can't be directly observed but has an immense influence on the cosmos. What exactly is this strange stuff, and what does it have to do with our existence? Astrophysicist Risa Wechsler explores why dark matter may be the key to understanding how the universe formed -- and shares how physicists in labs around the world are coming up with creative ways to study it.

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  • Are Dark Matter And Dark Energy The Same?


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    Astronomers are the worst at naming things. Dark energy AND dark matter? Who can remember which is which. But perhaps one astronomer has just fixed it, with a theory that says perhaps actually they are they same stuff.

    Space Time Journal Club digs into A Unifying Theory of Dark Energy and Dark Matter by J. Farnes, 2018

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    Jamie Farnes, astrophysicist at Oxford just published a paper suggesting that both dark energy and dark matter may result from the same phenomenon. And it’s pretty wild: negative mass particles continuously popping into existence between the galaxies. This rather extravagant claim resulted in a hysterical response from the media. Our viewers’ perfect blend of bright-eyed curiosity and cynical skepticism led to many MANY requests for us to do an episode on this new result. You got it. Today on Space Time Journal Club, let’s pick apart J.S. Farnes 2018, “A unifying theory of dark energy and dark matter: Negative masses and matter creation within a modified Lambda-CDM framework”.

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  • Brian Cox on Dark Matter & Dark Energy | Joe Rogan


    Taken from Joe Rogan Experience #1233 w/Brian Cox:

  • Dark Matter and Dark Energy: Everything Explained


    One of the biggest mysteries is all about dark matter and dark energy. What is it? Where does it come from? What does it do? Could it kill us? In this physics lesson, Es Einsteinium discusses dark matter, which is totally invisible and doesn't really interact with anything, but is responsible for massive galaxies. On the other hand, dark energy is ready to rip your atoms apart quark by quark. Learn about these physics mysteries!

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  • Dark Matter — The Greatest Mystery of The Universe | VICE on HBO


    Dark matter and dark energy comprise the vast majority of our universe, but it is the biggest mystery in modern physics to figure out what they actually are.

    The five percent of matter we can perceive abides by the laws of physics as we understand them. But when scientists applied the laws of gravity to how fast nearby galaxies are rotation, the math didn't add up. The other 95% of our universe is known only as dark matter and dark energy and scientists around the world are scrambling to understand what these two forces are.

    ​Who knows what discoveries and impacts on our lives will come said Dr. Bruno Leibundgut, an astronomer at the European Southern Observatory, where he and his team are utilizing the most powerful telescope on Earth to figure out just how much the universe's expansion is accelerating.​

    And in an abandoned gold mine a mile beneath the Black Hills of South Dakota, scientists are using a massive tank of supercooled liquid xenon as they wait for photosensors to measure an elusive dark matter particle.​​

    Nuclear physicist and VICE correspondent Taylor Wilson went to meet the scientists working to solve the greatest mystery of the universe.

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  • Dark matter: The matter we cant see - James Gillies


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    The Greeks had a simple and elegant formula for the universe: just earth, fire, wind, and water. Turns out there's more to it than that -- a lot more. Visible matter (and that goes beyond the four Greek elements) comprises only 4% of the universe. CERN scientist James Gillies tells us what accounts for the remaining 96% (dark matter and dark energy) and how we might go about detecting it.

    Lesson by James Gillies, animation by TED-Ed.

  • Dark Matter and Dark Energy | Sean Carroll | Talks at Google


    Author Sean Carroll visits Google's Santa Monica, CA office to discuss his book Dark Matter and Dark Energy. This event took place on November 17, 2008, as a part of the Authors@Google series.

  • Scientists Were Hunting for Dark Matter...and Then This Happened


    These scientists discovered the longest half-life ever recorded.
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    In April 2019, the Xenon1T detector in Italy aimed to detect dark matter with liquid xenon. While they failed to succeed, the team did discover the longest half-life ever recorded, which is extraordinarily rare.

    The experiment consisted of an enormous tank filled mostly with xenon cooled to -96 degrees Celsius, and while the vat contained 3.2 metric tons of liquid xenon, the experiment had a targeted exposure rate of 1 metric ton per year, hence the 1T in the name.

    The scientists were trying to expose the xenon to dark matter, or most specifically Weekly Interacting Massive Particles (WIMPs), which are thought to be heavy, slow-moving particles. But the particles are just hypothetical.

    The experimental hope was that while watching a gigantic tank of xenon very closely, a WIMP would collide with an atom and transfer some of that energy to the atom’s nucleus. In turn, that would excite other xenon atoms, ultimately leading to the release of faint signals of ultraviolet light and trace amounts of electrical charge which could be detected by sensors at the top and bottom of the tank.

    And after collecting data from 2016 to December 2018, scientists didn’t detect any dark matter, not a single hint of a WIMP. Instead, they discovered something else pretty monumental: a record-setting half-life.

    Learn more about the Xenon1T detector, the experiment and the unexpected result in this episode of Elements.

    #DarkMatter #Energy #Experiment #Seeker #Science #Elements

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    Dark matter detector reveals material with longest half-life ever – 18 sextillion years

    According to this study, the half-life of xenon 124 is a barely-comprehensible 18 sextillion years, or an 18 followed by 21 zeroes. For comparison's sake, that's more than a trillion times longer than the age of the universe itself, which is a mere 13.8 billion years young.

    Dark Matter

    Dark matter is stuff in space that has gravity, but it is unlike anything scientists have ever seen before. Together, dark matter and dark energy make up 95% of the universe. That only leaves a small 5% for all the matter and energy we know and understand.

    Dark Matter Search Results from a One Ton-Year Exposure of XENON1T

    XENON1T utilizes a liquid xenon time projection chamber with a fiducial mass of (1.30±0.01) ton, resulting in a 1.0 ton yr exposure.


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  • Neil deGrasse Tyson on Dark Matter and Dark Energy


    Dr. Neil deGrasse Tyson discusses Dark Matter and Dark Energy. An excerpt from University in Washington in 2011.

  • Dark Matter findings suggest Einstein’s Theory of Relativity “may be wrong” - BBC News


    Dark matter is perhaps the most mysterious substance in the universe.

    Little is known about it. Scientists are pretty sure it exists but don't know exactly what it is.

    Yet it is fundamental to their explanation of the Universe. They believe it permeates space and amounts to around 80% of all matter.

    Dark matter does not emit or absorb light but is subject to the effects of gravity. Because of that, astronomers can measure the way it distorts light from distant stars.

    Now for the first time they have mapped the distribution of dark matter in the Universe. However the findings have deepened the mystery because they seem to contradict Einstein’s Theory of Relativity, one of the central pillars of modern physics.

    Sophie Raworth presents BBC News at Ten reporting by science correspondent Pallab Ghosh.

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  • What is Dark Matter and Why Does it Matter?


    In this public lecture, Fermilab physicist Dan Bauer explains what scientists know about dark matter, the mysterious, invisible stuff that accounts for most of the matter in the universe. After presenting evidence for the existence of dark matter, he describes some of the physics experiments that scientists build and operate to look for signals from dark matter particles. From going deep underground to operating equipment at temperatures close to absolute zero to operating the most powerful particle collider in the world, scientists are pushing technological boundaries in their quest to discover the building blocks of dark matter. This lecture was held at Fermilab in October 2018 as part of a worldwide series of events to celebrate Dark Matter Day.

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  • Michio Kaku: What Is Dark Matter? | Big Think


    Michio Kaku: What Is Dark Matter?
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    Today, Dr. Kaku addresses a question posed by David Hernandez: If subatomic particles can be in two or more places at once, could parts of us be travelling back and forth between parallel universes and could these particles be dark matter?

    Dr. Michio Kaku is the co-founder of string field theory, and is one of the most widely recognized scientists in the world today. He has written 4 New York Times Best Sellers, is the science correspondent for CBS This Morning and has hosted numerous science specials for BBC-TV, the Discovery/Science Channel. His radio show broadcasts to 100 radio stations every week. Dr. Kaku holds the Henry Semat Chair and Professorship in theoretical physics at the City College of New York (CUNY), where he has taught for over 25 years. He has also been a visiting professor at the Institute for Advanced Study at Princeton, as well as New York University (NYU).

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  • The Shadow of the Universe - Dark Matter and Dark Energy OOTW


    We've made a number of astronomical breakthroughs in the last few decades, and with the unveiling of the first ever image of a black hole, science must turn its attention to the looming unsolved conundrums of existence - dark matter and dark energy. Dark matter's observed properties on things such as galaxy clusters has lent credence to it being an undiscovered form of particle, whereas dark energy appears to be a mystical and inexplicable property of the fabric on spacetime. We always have more to learn, hence the name of the concepts... we are in the dark. In today's episode, celebrating 1 year of Out Of This World, we look at the two phenomena, their expected properties, and their consequences for the universe.

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  • Dark Matter: The Situation has Changed


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    Today I tell you how my opinion about dark matter has changed an why. Is modified gravity better or worse? What evidence speaks for one side or the other, and is the case really as clear-cut as many astrophysicists claim?

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    #physics #space #astronomy

    0:00 Intro
    0:23 What is dark matter?
    2:22 Evidence for dark matter
    5:11 Evidence against dark matter
    7:25 If not dark matter, then what?
    9:43 Why we haven't made progress
    10:37 Sponsor message

  • What Is Dark Energy? | Space Mysteries | Earth Lab


    It makes up 70% of our universe, yet it still baffles us!

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    What Is Dark Energy?

    Probably one of the greatest remaining mysteries in our universe, dark energy raises many questions within the scientific community. With so little information, why do we think dark energy really exists. Dr Becky Smethurst an Astrophysicist leads the team of scientists to explain what we know about dark energy.

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  • Studying Dark Energy: Mysterious Force That Shaped The Universe | Cosmic Vistas | Spark


    We can’t see it, but dark energy is thought to be a main force shaping the universe. View the latest work to reveal the mysteries of this phenomenon, including a dark energy camera and telescope that will search for it in the movement of galaxies.
    Season Five of Cosmic Vistas journeys into our solar system to experience unparalleled views of the sun, planets, and distant worlds. Cutting-edge scientific thinking and incredible imagery provide a brand new perspective on the cosmos.

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    #Universe #DarkMatter #DarkEnergy

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  • Is Dark Energy & Dark Matter Same? ???? | What is Dark Energy? | Sci-Fi | Spectrum By Vedantu


    Hey guys, in this session we are here to understand the concept of Dark Energy. What is Dark Energy? Is Dark Energy & Dark Matter Same? Know all about it by your very own master teacher ???????????????????????????????? ???????????? coming with an amazing session of “Dark Energy | Sci-Fi (EP-11)” #spectrumbyvedantu ➡️ Watch the complete video to learn and Stay Tuned for more such amazing sessions. ???? Put Earphones on for the best experience ????

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  • Dark matter, dark energy: ESA and CERN set to unravel mysteries of the cosmos


    euronews knowledge brings you a fresh mix of the world's most interesting know-hows, directly from space and sci-tech experts.

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    This video explains dark matter and dark energy in less than 4 minutes.

    Dark matter makes up about 27% of the known Universe, and dark energy makes up the other 68%. We know very little about dark matter and dark energy - hence the word ‘dark’ being used to describe both.

    Dark matter is a form of matter that does not interact with light and so it is invisible to us. This video explains how we know it’s there and what we think makes up dark matter.

    Dark energy was discovered after experimental evidence showed that the expansion of the Universe was accelerating, rather than decelerating.

    What was causing this acceleration was dubbed dark energy.

    Dark energy, can be thought of as a property intrinsic to space and it’s behind the expanding Universe.
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    #physics #darkmatter #darkenergy

  • Dark Matter and Dark Energy Explained!


    What is Dark matter
    More is unknown than is known. We know how much dark energy there is because we know how it affects the Universe's expansion. Other than that, it is a complete mystery. But it is an important mystery. It turns out that roughly 68% of the Universe is dark energy. Dark matter makes up about 27%. The rest - everything on Earth, everything ever observed with all of our instruments, all normal matter - adds up to less than 5% of the Universe. Come to think of it, maybe it shouldn't be called normal matter at all, since it is such a small fraction of the Universe.

  • Dark Matter


    Scientists have no idea what it is, but Dark Matter and Dark Energy make up 96% of the Universe. Dark Matter is everywhere. It passes through everything we know on earth at billions of particles every second, yet no one has ever gotten a direct detection of this mysterious dark substance. An even more bewildering force is Dark Energy, which is rapidly pushing apart our Universe. Discovered only ten years ago, scientists are struggling to comprehend its unusual characteristics and answer the ultimate question; what is the fate of our Universe? Using cutting-edge computer graphics watch as the universe is brought down to earth.

  • What is Dark Matter? A Mystery of the Universe


    You've probably heard the term Dark Matter, but what is it, and how do we know it exists?


  • Dark Matter and Dark Energy: The Frontier of Astronomy


    For a while now, we've been discussing all of things we know about the universe. What about some of the things we don't know? If we look to the current frontier of astronomy, we find two mystifying concepts, dark matter and dark energy. What are these things? How do we know they exist? Do we have any guesses as to what they are? Find out here!

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  • Dark Matter Exists. Heres how we know.


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    Dark matter is 84% of the matter in the universe and it single-handedly explains a lot of stuff: cluster motion, galactic rotation, gravitational lensing, and the CMB. We have piles of irrefutable evidence. Let's go through it, shall we.

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    08:39 Rotation Curves
    10:21 Gravitational Lensing
    10:52 Bullet Cluster
    12:19 Cosmic Micowave Background
    13:54 Summary
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  • What is Dark Matter & Dark Energy?


    Scientists are still in the dark about what dark matter and dark energy really are. Just like the unknown x and y in algebra, dark matter and dark energy remain a mystery. Because they are currently unknown, the names of dark matter and dark energy are temporary only holding the place for the labels that will be given when scientists can shed some light on on these elusive concepts.

    What exactly is dark matter? A thing or two is known about dark matter. The first thing that is known is that it is matter. It takes up space. It has a gravitational pull. But that is where the similarities end. Galaxies, planets, and stars are made up of the most fundamental unit. The atom. The atom is made up of smaller subatomic particles such as protons, neutrons, and electrons. Matter that is composed of these is called baryonic matter. And yes, dark matter is definitely not baryonic matter. It does not emit light. It does not absorb light either. Electromagnetic energy does not go into it. So we can’t see it but we know that it is there.

    How? Well, dark matter exerts a very significant gravitational force on the things we can see. Using this knowledge, scientists have been able to find out that baryonic matter, which comprises of us, humans; our plant, stars, galaxies are just a small part of the universe. At a little over 4%, Dark matter takes up 23 percent of the universe and the remaining 72 percent is taken up by dark energy. But we will come back to this later.


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  • What Is Dark Matter? An Astrophysicist Explains | Ars Technica


    We see evidence for dark matter everywhere we look but proving hypotheses around it has been exceptionally difficult. Astrophysicist Paul Sutter explains everything about this mystery in a way almost anyone can understand - what we know about dark matter, what don’t, and how we’re trying to find out more.

    Read more here:

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    Video courtesy of:
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    What Is Dark Matter? An Astrophysicist Explains | Ars Technica

  • How Scientists Discovered Dark Matter


    What kind of clues led to the discovery of Dark Matter and its place in the universe?

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  • Dark Matter May Have Come Before the Big Bang?! | SciShow News


    A new study provides mathematical evidence that dark matter could be much older than we thought and we've found a weird glitch in a neutron star.

    Host: Hank Green

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  • No, We Did Not Just Solve Dark Matter and Dark Energy | SciShow News


    A paper published last week proposed a hypothesis that identified 95% of the missing stuff in the universe, but the headlines have been a little over-hyped.

    Hosted by: Hank Green

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  • What is Dark Matter and Dark Energy?


    On today's episode of Stuff I Should Have Known Yesterday, we're talking about how the universe is 95% invisible. We'll learn about Dark Matter and Dark Energy, and discover why we wouldn't be here without it.

  • How Dark Matter and Dark Energy Works | Unveiled


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    Dark matter and dark energy could hold the key to our universe. Theories are still only just beginning to form, but if our brightest minds can begin to understand the brain-boggling science behind them, it could change how we fundamentally see the world. This video gives a brief insight on what the fuss is all about!

    What do you think? Let us know in the comments, and tell us more questions you'd like us to explore!

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    #DarkMatter #DarkEnergy #Science #Physics

  • How did Scientists See the Invisible Dark Matter & Dark Energy? | Mr.GK


    Mysterious Dark Matter and Dark Energy Explained in Tamil

    பிரபஞ்சத்தின் மிகப் பெரிய புதிர்களில் ஒன்றாக இருந்துவருகின்ற dark matter எனப்படும் காண முடியாத பொருள் இருப்பது பற்றியும் அது எங்கு இருக்கிறது என்பது பற்றியும் விஞ்ஞானிகள் புதிய கண்டுபிடிப்புகளைச் தொடர்ந்து செய்து கொண்டு வருகின்றனர்.

    பிரபஞ்சத்தின் கட்டமைப்பு பொருளில் பெரும்பங்கு இந்த dark matter தான் என்றாலும், இந்தப் பொருளைப் பார்க்க முடியாது, ஆனால் தூரத்திலுள்ள அண்டங்களில் இருந்து வருகின்ற ஒளியில் இந்த டார்க் மேட்டர் ஏற்படுத்தும் தாக்கத்தை வைத்துத்தான் அது இருப்பதை அறிய முடிகிறது.

    What’s the difference between dark energy and dark matter?

    In short, dark matter slows down the expansion of the universe, while dark energy speeds it up.

    Dark matter works like an attractive force — a kind of cosmic cement that holds our universe together. This is because dark matter does interact with gravity, but it doesn’t reflect, absorb, or emit light. Meanwhile, dark energy is a repulsive force — a sort of anti-gravity — that drives the universe’s ever-accelerating expansion.

    Normal matter consists of the atoms that make up stars, planets, human beings and every other visible object in the Universe. to precisely assess the age of the universe to be 13.77 billion years old and to determine that atoms make up only 4.6 percent of the universe, with the remainder being dark matter and dark energy.



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  • What Is Dark Energy And Dark Matter?


    From what it is, what it might be in the future, and how it's expanding our universe, join us as we ask and explain the question, What is Dark Energy and Dark Matter?
    11. The Origins of Dark Energy and Dark Matter
    To know what Dark Energy and Dark Matter is on a basic level, we need to look at the very beginning of the universe itself. You see, scientists believed that the universe had stopped growing after the Big Bang. Or, at the very least, had slowed down from the rapid expansion that created the universe. Which would make sense when you think about it, because after a while, the expansion would have to stop, right?
    But then, in 1920, Edwin Hubble made a discovery that the universe was still growing, and it didn't show signs of stopping. This sent many scientists into a tizzy because it wasn't clear what would cause the universe to continue to expand. Could the energy from the Big Bang truly have been infinite?
    10. Dark Matter Goes Beyond Invisible
    So, as I noted before, one of the biggest problems in proving the notion of Dark Matter is that it's something that is invisible, and thus hard to detect. But it's more than just being invisible to the naked eye. After all, our own science and life are full of things that can't be seen by the naked eye, and yet are visible with magnification or other spectrums. So is that the case with Dark Matter? Are we just not looking hard enough?
    9. Dark Matter Holds Galaxies Together
    So given all the theories and mysteries around Dark Matter, you might be wondering why we think it exists at all outside of the expansion of the universe. To that, I would answer that many scientists believe that Dark Matter is the reason that galaxies exist as we know them. How does that work when the Big Bang apparently created everything? Simple, while the Big Bang was the creation event, many scientists have noted that galaxies shouldn't stay together in their current forms. 8. The Cosmological Constant
    Heading to Dark Energy now, let's talk about a popular theory that was brought forward by none other than Albert Einstein himself! He believed that the universe could actually be born from nothing, and that the larger the universe got, the bigger the potential for energy that it could contain. This is what he called the cosmological constant .
    7. The Theory Of Everything
    Continuing on with grand theories that could explain Dark Energy, Dark Matter, and more, there are many scientists who believe that the true answer for these forces, and all other mysteries of the universe can be found in...The Theory of Everything.
    To be clear, The Theory of Everything is a concept that defines how the universe works and interacts with one another. It may seem at times that we have this answer already but that's actually very far from the truth. Because EVERYTHING doesn't always fall into one set of guidelines or beliefs, scientists have take the divide and conquer approach by making smaller theories about forces in the universe and then trying to combine them. Which has not worked so far. Such as String Theory, Quantum Mechanics, Theory of Gravity, and more.

    6. Dark Matter Isn't Evenly Distributed Through The Universe
    This fact shouldn't come as too big of a shock, but it does help explain certain inconsistencies about Dark Matter itself. Because of its nature, as well as its abilities, it would be very odd to find that Dark Matter is evenly put throughout the universe.
    5. It Bends The Reality Of Space As We See It
    I want you to picture a clear night on Earth, and you're looking up at the night sky and you see...what? Stars I would hope. But more than that, you see a multitude of stars, and occasionally a planet or two in the sky.
    4. Dark Energy Could Be Another Major Fundamental Force Of The Universe
    One of the stronger theories about Dark Energy and its presence in the cosmos lines up with the known properties of our universe. Mainly, the fundamental forces that hold it together. The ones that we know of and have scientifically confirmed include: gravity, electromagnetism, weak force, and strong force. Each doing something on either a large or
    3. We Know They Don't Come From Black Holes
    There are a lot of theories as to what Dark Matter is and isn't and where it comes from, but one thing that most scientists agree on is that there are some entities in the universe that we know for sure it doesn't come from. One of those things is Black Holes.
    2. There Are Maps Of Dark Matter
    Despite the fact that we can't detect Dark Matter on a meaningful level, that doesn't mean that we don't have good guesses as to where it is and where it isn't. in fact, there are actually maps out there right now that outline the basic places where Dark Matter is allegedly at. This is based on radiation relics left over from the Big Bang.

    1. Will We Ever Truly Discover Dark Matter and Dark Energy?

  • Are Dark Matter and Dark Energy Scientific?


    I have noticed that each time I talk about dark energy or dark matter, I get a lot of comments from people saying, oh that stuff doesn’t exist, you can’t just invent something invisible each time there’s an inconvenient measurement. Physicists have totally lost it. This is such a common misunderstanding that I thought I will dedicate a video to sorting this out. Dark energy and dark matter are entirely normal, and perfectly scientific hypotheses. They may turn out to be wrong, but that doesn’t mean it’s wrong to consider them in the first place.

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  • What is Dark Matter and Why is it Important?


    Did you know that all of the observable matter in the universe is only 5% of what’s really out there? The other 95%, known as dark matter, has puzzled scientists for decades. Watch SciToons’ new video to learn more!


  • E.E. Just Symposium Keynote Address: Dark Energy, Dark Matter and Inflation


    Dark Energy, Dark Matter and Inflation: New Physics or 21st Century Phlogiston
    Presented by David Spergel, Charles A. Young Professor of Astronomy on the Class of 1987 Foundation and Chair, Department of Astrophysical Sciences at Princeton University
    September 28, 2012

  • THE DARK SIDE - Black Holes And Invisible Matter | SPACETIME - SCIENCE SHOW


    We are surrounded by dark matter and dark energy. Mysterious forces that permeate the universe and play a fundamental role in determining its evolution. Scientists can observe the effects of these cosmic enigmas. But as yet, they have found nothing.

    Space, an infinite vastness. But there's nothing in it. In a volume of about 13,000 by 13,000 by 13,000 kilometers, which is roughly the volume of the earth, there's the mass equivalent of a small grain of sand. Not only that, when you examine this grain of sand, you find it consists of ghostly particles. Particles that pass through everything without leaving behind a trace. And then there's dark energy. What exactly are dark matter and dark energy?

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  • The Dark Matter & Dark Energy | Complete Explanation


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  • Physics 20B. Cosmology. Lec. 22: Dark Matter and Dark Energy


    UCI Physics 20B: Cosmology (Winter 2015)
    Lec 22. Cosmology -- Dark Matter and Dark Energy
    View the complete course:
    Instructor: James Bullock, Ph.D.

    License: Creative Commons CC-BY-SA
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    More courses at

    Description: Cook's Tour of the universe. Ancient world models. Evidence for universal expansion; the size and age of the universe and how it all began. The long-range future and how to decide the right model. Anthropic principle.

    Recorded March 6, 2015

    Required attribution: Bullock, James. Physics 20B (UCI OpenCourseWare: University of California, Irvine), [Access date]. License: Creative Commons Attribution-ShareAlike 3.0 United States License. (

  • CSS Lecture# 3 || What is Dark Matter and Dark Energy? || Latest 2021


    CSS (GSA) Lecture# 3 || What is Dark Matter and Dark Energy? || Latest 2021
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    Dark Matter and Dark Energy Explained!
    Dark Matter: Crash Course Astronomy #41
    Dark matter: The matter we can't see - James Gillies
    The search for dark matter -- and what we've found so far | Risa Wechsler
    #thesearchfor darkmatter
    What is dark matter made of? Leading theories explained: Axion, Wimp, Machos

  • Dark Energy & Dark Matter | Simplified In Short


    #css #fpsc The visible universe; including Earth, the sun, other stars, and galaxies—is made of protons, neutrons, and electrons bundled together into atoms. Perhaps one of the most surprising discoveries of the 20th century, was that this ordinary matter makes up less than 5 percent of the mass of the universe. The rest of the universe appears to be made of a mysterious; invisible substance called dark matter, i.e. around 25 percent, and a force that repels gravity known as dark energy, i.e. around 70 percent.

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  • Jelly Bean Universe


    Fermilab's Kurt Riesselmann explains how to make a jelly bean universe to help explain the mysteries of dark matter and dark energy.

  • Dark Matter, Dark Energy, Dark Information


    To read along to go
    This blog deals with dark matter and dark energy and how it makes up a big part of our universe.

  • Dark Matter & Dark Energy


    Our very own Steve Hallman, a physicist with over 30 years experience in the aerospace industry, including work on NASA's VIIRS sensor for the NOAA-20 weather satellite, talks about Dark Matter & Dark Energy.

  • Detailed Proof of Dark Matter/Dark Energy Released, But Something Is Odd


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    Hello and welcome! My name is Anton and in this video, we will talk about major discoveries and confirmations coming from the Dark Energy Survey
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  • Hubble Makes Unexpected Dark Matter Discovery


    Astronomers seem to have revealed a puzzling detail in the way dark matter behaves.
    They found small, dense concentrations of dark matter that bend and magnify light much more strongly than expected.

    Read more:

    Video credit: NASA's Goddard Space Flight Center
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    Visualizations and Additional Footage:
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    R. Wesson/ESO — Very Large Telescope Footage

    “On the Path” by Bernhard Hering [GEMA] and Matthias Kruger [GEMA] via Berlin Production Music/Universal Production Music GmbH [GEMA]

    This video is public domain and along with other supporting visualizations can be downloaded from the Scientific Visualization Studio at:

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