{"id":2609,"date":"2014-07-29T18:15:09","date_gmt":"2014-07-29T23:15:09","guid":{"rendered":"http:\/\/sciencemediacentre.ca\/site\/?p=2609"},"modified":"2014-07-31T13:37:21","modified_gmt":"2014-07-31T18:37:21","slug":"milky-way-galaxy-may-be-lighter-than-previously-thought","status":"publish","type":"post","link":"http:\/\/sciencemediacentre.ca\/site\/milky-way-galaxy-may-be-lighter-than-previously-thought\/","title":{"rendered":"Milky Way galaxy may be lighter than previously thought<img src=\"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/01\/canada_flag_icon_small.gif\">"},"content":{"rendered":"<div id=\"attachment_2607\" style=\"width: 410px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/07\/1024px-Andromeda_Galaxy_with_h-alpha.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-2607\" class=\"size-full wp-image-2607\" src=\"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/07\/1024px-Andromeda_Galaxy_with_h-alpha.jpg\" alt=\"M31, the Andromeda galaxy, may be up to twice as massive as the Milky Way, despite a similar size and structure. (Photo credit: Adam Evans, via flickr)\" width=\"400\" height=\"263\" srcset=\"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/07\/1024px-Andromeda_Galaxy_with_h-alpha.jpg 400w, http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/07\/1024px-Andromeda_Galaxy_with_h-alpha-300x197.jpg 300w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/a><p id=\"caption-attachment-2607\" class=\"wp-caption-text\">M31, the Andromeda galaxy, may be up to twice as massive as the Milky Way, despite a similar size and structure. (Photo credit: <a href=\"http:\/\/www.flickr.com\/photos\/astroporn\/4999978603\/\">Adam Evans, via flickr<\/a>)<\/p><\/div>\n<p><span style=\"color: #000000;\">A new computer simulation has calculated that the mass of our own Milky Way galaxy is about half that of the Andromeda galaxy, one of our closest partners despite previous research.<\/span><\/p>\n<p>Using the motion and position of &#8220;satellite galaxies&#8221; researchers have showing that the Milky Way galaxy has a smaller mass than the Andromeda galaxy.\u00a0The difference in mass is likely due to \u2018dark matter\u2019 that cannot be observed by telescopes.<\/p>\n<p>The study also shows that the rate at which the our local group of galaxies is\u00a0expanding is\u00a0consistent with that on the universal scale obtained from cosmic microwave background radiation studies.<\/p>\n<p><span style=\"text-decoration: underline;\"><a href=\"http:\/\/mnras.oxfordjournals.org\/content\/443\/3\/2204.short?rss=1\" target=\"_blank\">Original research paper<\/a><\/span>\u00a0published in the\u00a0<em>Monthly Notices of the Royal Astronomical Society<span style=\"color: #000000;\">\u00a0<\/span><\/em>on\u00a0<strong>July 29, 2014<\/strong>.<\/p>\n<p><span style=\"text-decoration: underline;\"><em><strong>Names and affiliations of selected\u00a0authors<\/strong><\/em><\/span><\/p>\n<h4><span style=\"color: #000000;\">Yin-Zhe Ma, University of British Columbia, British Columbia<\/span><\/h4>\n","protected":false},"excerpt":{"rendered":"<p>A new computer simulation has calculated that the mass of our own Milky Way galaxy is about half that of the Andromeda galaxy, one of our closest partners despite previous research. Using the motion and position of &#8220;satellite galaxies&#8221; researchers have showing that the Milky Way galaxy has a smaller mass than the Andromeda galaxy.\u00a0The [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":2607,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[25],"tags":[125,1960,533,2060,1902],"class_list":["post-2609","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-paper-of-interest","tag-british-columbia","tag-dark-matter","tag-space","tag-universal-expansion","tag-universe"],"jetpack_featured_media_url":"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/07\/1024px-Andromeda_Galaxy_with_h-alpha.jpg","jetpack_shortlink":"https:\/\/wp.me\/p4DqbN-G5","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts\/2609","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/comments?post=2609"}],"version-history":[{"count":4,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts\/2609\/revisions"}],"predecessor-version":[{"id":2636,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts\/2609\/revisions\/2636"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/media\/2607"}],"wp:attachment":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/media?parent=2609"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/categories?post=2609"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/tags?post=2609"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}