{"id":656563,"date":"2026-10-25T10:56:09","date_gmt":"2026-10-25T10:56:09","guid":{"rendered":"https:\/\/www.newsbeep.com\/il\/656563\/"},"modified":"2026-10-25T10:56:09","modified_gmt":"2026-10-25T10:56:09","slug":"apod-2026-october-25-dark-matter-in-a-simulated-universe","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/il\/656563\/","title":{"rendered":"APOD: 2026 October 25 &#8211; Dark Matter in a Simulated Universe"},"content":{"rendered":"<p class=\"p-md margin-0 media-detail-hero__description\">\n\t\t\t\t\t\t\tExplanation: Is our universe haunted? It might look that way on this <a href=\"https:\/\/spaceplace.nasa.gov\/dark-matter\/\" rel=\"nofollow noopener\" target=\"_blank\">dark matter<\/a> map. The gravity of unseen <a href=\"https:\/\/chandra.harvard.edu\/xray_astro\/dark_matter\/\" rel=\"nofollow noopener\" target=\"_blank\">dark matter<\/a> is the leading explanation for why <a href=\"https:\/\/ed.ted.com\/lessons\/dark-matter-how-does-it-explain-a-star-s-speed-don-lincoln\" rel=\"nofollow noopener\" target=\"_blank\">galaxies rotate so fast<\/a>, why <a href=\"https:\/\/medium.com\/starts-with-a-bang\/galaxy-clusters-prove-dark-matters-existence-fd962c979458\" rel=\"nofollow noopener\" target=\"_blank\">galaxies orbit clusters so fast<\/a>, why gravitational lenses so strongly deflect light, and how <a href=\"https:\/\/science.nasa.gov\/image-article\/apod-2014-may-12-illustris-simulation-of-the-universe\/\" rel=\"nofollow noopener\" target=\"_blank\">visible matter<\/a> is distributed. The featured image from the <a href=\"https:\/\/www.amnh.org\/\" rel=\"nofollow noopener\" target=\"_blank\">American Museum of Natural History<\/a>&#8216;s <a href=\"https:\/\/www.amnh.org\/research\/hayden-planetarium\" rel=\"nofollow noopener\" target=\"_blank\">Hayden Planetarium<\/a> Space Show, Dark Universe, highlights one example of how pervasive dark matter might haunt our universe. In this frame from a <a href=\"https:\/\/www.youtube.com\/watch?v=zEEg1XkbXDo\" rel=\"nofollow noopener\" target=\"_blank\">detailed computer simulation<\/a>, complex filaments of dark matter, shown in black, are strewn <a href=\"https:\/\/science.nasa.gov\/image-article\/apod-2011-october-3-dark-matter-movie-from-the-bolshoi-simulation\/\" rel=\"nofollow noopener\" target=\"_blank\">about the universe<\/a> like <a href=\"https:\/\/www.badspiderbites.com\/giant-spider-web\/\" rel=\"nofollow noopener\" target=\"_blank\">spider webs<\/a>, while the relatively rare clumps of familiar <a href=\"https:\/\/en.wikipedia.org\/wiki\/Baryon\" rel=\"nofollow noopener\" target=\"_blank\">baryon<\/a>ic matter are colored orange. These simulations are good statistical matches to astronomical observations. In what is perhaps a <a href=\"https:\/\/unsplash.com\/photos\/brown-scottish-fold-in-brown-thick-pile-blanket-NodtnCsLdTE\" rel=\"nofollow noopener\" target=\"_blank\">scarier<\/a> turn of events, <a href=\"https:\/\/science.nasa.gov\/dark-matter\/\" rel=\"nofollow noopener\" target=\"_blank\">dark matter<\/a> &#8212; although quite strange and in an <a href=\"https:\/\/home.cern\/science\/physics\/dark-matter\" rel=\"nofollow noopener\" target=\"_blank\">unknown form<\/a> &#8212; is no longer thought to be the strangest source of <a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2008AmJPh..76..265N\/abstract\" rel=\"nofollow noopener\" target=\"_blank\">gravity in the universe<\/a>. That honor now falls to <a href=\"https:\/\/science.nasa.gov\/dark-energy\/\" rel=\"nofollow noopener\" target=\"_blank\">dark energy<\/a>, a more uniform source of <a href=\"http:\/\/www.preposterousuniverse.com\/blog\/2013\/11\/16\/why-does-dark-energy-make-the-universe-accelerate\/\" rel=\"nofollow noopener\" target=\"_blank\">repulsive gravity<\/a> that seems to now dominate the <a href=\"https:\/\/science.nasa.gov\/image-article\/apod-2015-may-31-supernova-1994d-and-the-unexpected-universe\/\" rel=\"nofollow noopener\" target=\"_blank\">expansion<\/a> of the entire <a href=\"https:\/\/science.nasa.gov\/apod\/the-nature-of-the-universe-great-debate-in-1998-program\/\" rel=\"nofollow noopener\" target=\"_blank\">universe<\/a>.<\/p>\n<p>Tomorrow&#8217;s picture: Orion the Great\t\t\t\t\t\t<\/p>\n","protected":false},"excerpt":{"rendered":"Explanation: Is our universe haunted? It might look that way on this dark matter map. The gravity of&hellip;\n","protected":false},"author":2,"featured_media":656564,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23],"tags":[257340,85,46,141,145],"class_list":["post-656563","post","type-post","status-publish","format-standard","has-post-thumbnail","category-space","tag-apod","tag-il","tag-israel","tag-science","tag-space"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/posts\/656563","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/comments?post=656563"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/posts\/656563\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/media\/656564"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/media?parent=656563"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/categories?post=656563"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/tags?post=656563"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}