{"id":915178,"date":"2026-09-30T09:52:08","date_gmt":"2026-09-30T09:52:08","guid":{"rendered":"https:\/\/www.newsbeep.com\/ca\/915178\/"},"modified":"2026-09-30T09:52:08","modified_gmt":"2026-09-30T09:52:08","slug":"apod-2026-september-30-arp-78-peculiar-galaxy-in-aries","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/ca\/915178\/","title":{"rendered":"APOD: 2026 September 30 \u2013 Arp 78: Peculiar Galaxy in Aries"},"content":{"rendered":"<p class=\"p-md margin-0 media-detail-hero__description\">\n\t\t\t\t\t\t\tExplanation: <a href=\"http:\/\/ned.ipac.caltech.edu\/level5\/Arp\/frames.html\" rel=\"nofollow noopener\" target=\"_blank\">Peculiar<\/a> spiral galaxy Arp 78 is found within the boundaries of the head strong <a href=\"http:\/\/hawastsoc.org\/deepsky\/ari\/index.html\" rel=\"nofollow noopener\" target=\"_blank\">constellation Aries<\/a>. Some 100 million light-years beyond the stars and nebulae of our Milky Way galaxy, the island universe is an enormous 200,000 light-years across. <a href=\"https:\/\/www.nasa.gov\/image-feature\/goddard\/2019\/hubble-spots-a-curious-spiral\" rel=\"nofollow noopener\" target=\"_blank\">Also known as NGC 772<\/a>, it sports a prominent, outer spiral arm in <a href=\"https:\/\/app.astrobin.com\/u\/Robsi?i=nfm6vp\" rel=\"nofollow noopener\" target=\"_blank\">this detailed cosmic portrait<\/a>. Tracking along sweeping dust lanes and <a href=\"http:\/\/arxiv.org\/abs\/0810.1748\" rel=\"nofollow noopener\" target=\"_blank\">lined with<\/a> young blue star clusters, Arp 78&#8217;s overdeveloped spiral arm is <a href=\"https:\/\/noirlab.edu\/public\/images\/noirlab2209a\/\" rel=\"nofollow noopener\" target=\"_blank\">pumped-up<\/a> by galactic-scale gravitational tides. Interactions with its brightest companion galaxy, the more compact NGC 770 seen directly below the larger spiral, are likely responsible. Embedded in faint star streams revealed in the deep telescopic exposure, NGC 770&#8217;s fuzzy, elliptical appearance contrasts nicely with spiky foreground Milky Way stars.<\/p>\n<p>APOD&#8217;s email for image submissions has changed. Please see: <a href=\"https:\/\/apod.nasa.gov\/apod\/lib\/apsubmit2015.html\" rel=\"nofollow noopener\" target=\"_blank\">APOD Submissions<\/a>.<br \/>Tomorrow&#8217;s picture: a harvest\t\t\t\t\t\t<\/p>\n","protected":false},"excerpt":{"rendered":"Explanation: Peculiar spiral galaxy Arp 78 is found within the boundaries of the head strong constellation Aries. Some&hellip;\n","protected":false},"author":2,"featured_media":915179,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23],"tags":[292290,49,48,66,306],"class_list":["post-915178","post","type-post","status-publish","format-standard","has-post-thumbnail","category-space","tag-apod","tag-ca","tag-canada","tag-science","tag-space"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/ca\/wp-json\/wp\/v2\/posts\/915178","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/ca\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/ca\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/ca\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/ca\/wp-json\/wp\/v2\/comments?post=915178"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/ca\/wp-json\/wp\/v2\/posts\/915178\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/ca\/wp-json\/wp\/v2\/media\/915179"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/ca\/wp-json\/wp\/v2\/media?parent=915178"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/ca\/wp-json\/wp\/v2\/categories?post=915178"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/ca\/wp-json\/wp\/v2\/tags?post=915178"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}