What Is Dark Matter? A.I. Knows More About It Than Scientists Thought



the scale of the universe is nearly impossible to imagine science is best guessed at the moment is that our universe is 93 billion light-years wide that's 21 billion times the distance between our Sun and the nearest star system Alpha Centauri and Alpha Centauri is not close by our standards it would take a conventional space shuttle 165 thousand years to get there because of this enormous size and the sheer number of objects in our universe it has been an ongoing challenge for astrophysicists to fully understand what it all looks like and especially how it got to where it is today and where it's going in the future that's where artificial intelligence can apparently help how well the answer comes in a new study from Carnegie Mellon cow into the University of Tokyo scientists there used an AI technique called deep learning to map the structure of the universe deep learning is a machine learning method it basically teaches computers how to learn by repetition in the past it's been used for modeling isolated astronomical events like supernovae and the formation of planets but this is the first time we've ever tried to use deep learning to map the universe to do this the scientists told the system called d3m to focus on how gravity affects interactions between objects in the sky this isn't easy to accurately simulate how the universe evolves over time the system must calculate how gravity ships billions of individual particles and how they interact with each other over billions of years researchers first trained d3m by giving it to thousands of other simulations down in the past the system then competed with old methods of universe simulation and handily beat them in every category prior to this the fastest competing method typically took a few minutes to complete one simulation and had an error rate of about 9% the AI just did the same computation in 30 milliseconds and had an error rate of just 3% but that's not what makes this AI special it also showed the ability to accurately simulate how a universe would look in the future if it had differing quantities of dark matter right now we think Dark Matter makes up about 85% of all matter if there was only ordinary matter in the universe there likely wouldn't have been enough time for the formation of galaxies that we observed today the AI was able to simulate how differing levels of dark matter would affect the universe over time despite the researchers not training it to do this it's absurd really because even the scientists who trained the system don't know how it was able to understand dark matter so well Shirley Howe and author of the study said this about it quote it's like teaching image recognition software with lots of pictures of cats and dogs but then it's able to recognize elephants nobody knows how it does this and it's a great mystery to be solved so what's this really mean for the future of astrophysics well for one it's possible that other studies can use AI to figure out the nature of dark matter it has been nearly a hundred years since an astronomer first to use the term dark matter and it is still inconclusive as to what it actually is our best guess is right now is that it is comprised of some sort of undiscovered subatomic particle one possibility scientists are considering is wimps or weakly interacting massive particles these would theoretically have one to 1000 times the mass of a proton and would only interact with each other through the weak force which is responsible for radioactive decay wimps had long been the favorite candidates for dark matter but that is now beginning to be debated directed detection experiments continue to not find them another guess for what Dark Matter might be are sterile neutrinos neutrinos are particles that have nearly no mass and almost always pass through normal matter undetected sterile neutrinos then are a theoretical counterpart to neutrinos the Japanese telescope astro-h is currently searching for them but we're not done if you're still interested in what dark matter might be scientists have a few more exotic guesses there's another theoretical particle that it might be something called the neutralino which comes from the theory of supersymmetry supersymmetry proposes that each particle in the standard model of particle physics has an undiscovered partner it's possible the dark matter might be a soup of supersymmetric particles and the easiest to detect could be the neutralino if this has ever discovered it means that there are a lot of other partner particles waiting to be found – maybe the craziest theory some physicists think Dark Matter might be bleeding into our universe from a mirror universe so-called mirror matter it's possible that this is dark protons and neutrons that only interact with us through gravity and there's nothing we can do to detect it on second thought we take that back there's one more theory that might be even crazier dark matter could actually be from another dimension such as a fourth spatial dimension that we cannot perceive known as Kaluza Klein dark matter the confirmation of extra dimensional dark matter would support a string theory which needs the existence of other dimensions to work there are other theories like axioms and strongly interacting massive particles that are candidates to Stephen Hawking even proposed that dark matter could it be tiny primordial black holes but a team from the University of Tokyo basically disproved this a few months ago as you can probably now imagine it really is interesting that the d3 M AI was able to simulate dark matter on its own because it might be able to figure out something humans have so far missed we bet that there's a lot of future research that we use this technology to tackle this mystery hopefully humans will be able to understand it we are a new science channel who plans to cover each week's most interesting academic studies if you're interested in future videos like this subscribe thanks for 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3 thoughts on “What Is Dark Matter? A.I. Knows More About It Than Scientists Thought”

  1. Isn't superstring theory what Sheldon Cooper got his Nobel Prize for? But seriously folks, quite interesting even though some of it was way out of my range. Also, the photos and video came across my phone in great quality and detail. Good stuff.

  2. I'm sincerely surprised with the high quality of the video. Hope you get the attention you deserve, at least from my part I'll share it with the most people as I can

  3. Good evening! It looks like A.I. will be a great ally in the hunt to explain the dark matter mystery. This channel is so far a one-man team doing the audio, music, visuals and subject matter, so your support has been very much appreciated. I've also upgraded our audio equipment beginning in this video.

    I started this channel because I think the media can do a much better job covering scientific papers. There are thousands of researchers out there making great discoveries every week, and their results deserve to be appreciated for the wonders that they truly are! ❤️🔬⚛️

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