{"id":141951,"date":"2022-07-10T11:02:18","date_gmt":"2022-07-10T16:02:18","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2022\/07\/dark-matter-our-review-suggests-its-time-to-ditch-it-in-favor-of-a-new-theory-of-gravity"},"modified":"2022-07-10T11:02:18","modified_gmt":"2022-07-10T16:02:18","slug":"dark-matter-our-review-suggests-its-time-to-ditch-it-in-favor-of-a-new-theory-of-gravity","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2022\/07\/dark-matter-our-review-suggests-its-time-to-ditch-it-in-favor-of-a-new-theory-of-gravity","title":{"rendered":"Dark matter: Our review suggests it\u2019s time to ditch it in favor of a new theory of gravity"},"content":{"rendered":"

<\/a><\/p>\n

We can model the motions of planets in the Solar System quite accurately using Newton\u2019s laws of physics. But in the early 1970s, scientists noticed that this didn\u2019t work for<\/a> disk galaxies <\/a>\u2014stars at their outer edges, far from the gravitational force of all the matter at their center\u2014were moving much faster than Newton\u2019s theory predicted.<\/p>\n

This made physicists propose that an invisible substance called \u201cdark matter<\/a>\u201d was providing extra gravitational pull, causing the stars to speed up\u2014a theory<\/a> that\u2019s become hugely popular. However, in a recent review my colleagues and I suggest that observations across a vast range of scales are much better explain<\/i>ed in an alternative theory of gravity proposed by Israeli physicist Mordehai Milgrom in 1982 called Milgromian dynamics or Mond <\/a>\u2014requiring no invisible matter.<\/p>\n

Mond\u2019s main postulate is that when gravity becomes very weak, as occurs at the edge of galaxies, it starts behaving differently from Newtonian physics. In this way, it is possible to explain<\/a> why stars, planets and gas in the outskirts of over 150 galaxies rotate faster than expected based on just their visible mass. But Mond doesn\u2019t merely explain<\/i> such rotation curves, in many cases, it predicts<\/i> them.<\/p>\n","protected":false},"excerpt":{"rendered":"

We can model the motions of planets in the Solar System quite accurately using Newton\u2019s laws of physics. But in the early 1970s, scientists noticed that this didn\u2019t work for disk galaxies \u2014stars at their outer edges, far from the gravitational force of all the matter at their center\u2014were moving much faster than Newton\u2019s theory [\u2026]<\/p>\n","protected":false},"author":672,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[33,219],"tags":[],"class_list":["post-141951","post","type-post","status-publish","format-standard","hentry","category-cosmology","category-physics"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/141951","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/672"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=141951"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/141951\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=141951"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=141951"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=141951"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}