An Alternative to Dark Matter?

Models of the universe’s early days have only been possible with dark matter as a variable, but we still don’t have proof that dark matter exists. But recently, scientists may have found a way to replicate the results without the presence of the elusive matter. Plus, we’re leaking our DNA out in space! Hosted By: Hank Green SciShow is on TikTok! Check us out at https://www.tiktok.com/@scishow ---------- Support SciShow Space by becoming a patron on Patreon: https://www.patreon.com/SciShowSpace ---------- Huge thanks go to the following Patreon supporter for helping us keep SciShow Space free for everyone forever: GrowingViolet, Jason A Saslow, Andy Griffith, and Heriberto Bustos! ---------- 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? SciShow Tangents Podcast: http://www.scishowtangents.org Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Instagram: http://instagram.com/thescishow ---------- Sources: https://physics.aps.org/articles/v14/143 https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.127.161302 (paywall) https://arxiv.org/abs/2007.00082 (open) https://www.heart.org/en/news/2021/10/20/spaceflight-caused-dna-to-leak-out-of-astronauts-cell-powerhouse https://www.ahajournals.org/doi/full/10.1161/JAHA.121.022055 (open) Image Sources: https://commons.wikimedia.org/wiki/File:Whirlpool_galaxy.png https://flickr.com/photos/25053835@N03/19030866396 https://www.nasa.gov/mission_pages/chandra/news/a-new-twist-in-the-dark-matter-tale.html https://www.nasa.gov/content/hubble-sees-a-smiling-lens https://imagine.gsfc.nasa.gov/observatories/satellite/wmap/ https://commons.wikimedia.org/wiki/File:PIA16874-CobeWmapPlanckComparison-20130321.jpg https://www.nasa.gov/feature/goddard/2021/nasa-s-webb-will-use-quasars-to-unlock-the-secrets-of-the-early-universe https://www.nasa.gov/feature/making-sense-of-the-big-bang-wilkinson-microwave-anisotropy-probe https://commons.wikimedia.org/wiki/File:Planck_satellite_cmb.jpg https://www.nasa.gov/feature/jpl/galaxy-clusters-reveal-new-dark-matter-insights https://www.istockphoto.com/photo/3d-illustration-of-dna-molecule-gm1217595729-355475529 https://commons.wikimedia.org/wiki/File:Jessica_Meir_and_Christina_Koch_inside_the_Quest_airlock.jpg https://commons.wikimedia.org/wiki/File:Space_body_fluid.svg https://commons.wikimedia.org/wiki/File:Victor_Glover_works_on_US_spacesuit_maintenance_inside_the_Quest_airlock_02.jpg https://commons.wikimedia.org/wiki/File:Mitochondrial_DNA_lg.jpg https://www.istockphoto.com/photo/mitochondria-cellular-organelles-produce-energy-cell-energy-and-cellular-respiration-gm1227573995-362103955 https://www.istockphoto.com/photo/diagonal-test-tubes-with-blood-gm1084064440-290845255 https://www.nasa.gov/hhp/medical-examination-requirements https://www.istockphoto.com/photo/mitochondrion-gm681345840-124894359 https://commons.wikimedia.org/wiki/File:Earth_Eastern_Hemisphere.jpg https://www.nasa.gov/hhp/medical-examination-requirements