What We (Don t) Know About Dark Matter

Scientists are still working on theories that might help explain what the vast majority of our universe is made of. Get your copy of We Have No Idea at http://phdcomics.com/noidea Hosted by: Hank Green ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters—Kevin, Bealer, Mark Terrio-Cameron, KatieMarie Magnone, Patrick Merrithew, Charles Southerland, Fatima Iqbal, Sultan Alkhulaifi, Tim Curwick, Scott Satovsky Jr, Philippe von Bergen, Bella Nash, Bryce Daifuku, Chris Peters, Patrick D. Ashmore, Piya Shedden, Charles George ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ---------- Sources: https://arxiv.org/abs/1408.6064v1 http://www.nature.com/nature/journal/v537/n7622_supp/full/537S194a.html https://www.quantamagazine.org/20161129-verlinde-gravity-dark-matter/ http://www.sciencealert.com/physicists-just-debunked-one-of-the-most-promising-dark-matter-candidates Paul J. Steinhardt, Neil Turok, The Endless Universe. http://iopscience.iop.org/article/10.1088/1475-7516/2004/04/008 https://www.wired.com/2016/08/icecube-hasnt-found-sterile-neutrinos/ https://physics.aps.org/synopsis-for/10.1103/PhysRevLett.116.101302 https://blogs.scientificamerican.com/guest-blog/are-parallel-universes-unscientific-nonsense-insider-tips-for-criticizing-the-multiverse/ https://arxiv.org/abs/hep-ph/9710467 https://journals.aps.org/prd/abstract/10.1103/PhysRevD.93.043535 https://arxiv.org/abs/1510.05008 http://link.springer.com/article/10.1007%2Fs10714-008-0707-4 http://adsabs.harvard.edu/abs/1970ApJ...159..379R Images: https://commons.wikimedia.org/wiki/File:Gravitationell-lins-4.jpg https://en.wikipedia.org/wiki/File:Fermi_Observations_of_Dwarf_Galaxies_Provide_New_Insights_on_Dark_Matter.ogv https://commons.wikimedia.org/wiki/File:Bullet_cluster.jpg https://commons.wikimedia.org/wiki/File:BH_LMC.png https://commons.wikimedia.org/wiki/File:2MASSJ22282889-431026.jpg https://commons.wikimedia.org/wiki/File:1e0657_scale.jpg https://commons.wikimedia.org/wiki/File:FirstNeutrinoEventAnnotated.jpg https://commons.wikimedia.org/wiki/File:%D0%9F%D0%B0%D1%80%D0%B0%D0%BD%D0%B0%D0%BB%D1%8C%D1%81%D0%BA%D0%B8%D0%B5_%D0%BD%D0%BE%D1%87%D0%B8.jpg https://commons.wikimedia.org/wiki/File:Moving_heart_of_the_Crab_Nebula.jpg