{"id":62643,"date":"2025-08-12T13:38:09","date_gmt":"2025-08-12T13:38:09","guid":{"rendered":"https:\/\/www.newsbeep.com\/au\/62643\/"},"modified":"2025-08-12T13:38:09","modified_gmt":"2025-08-12T13:38:09","slug":"dancing-dwarf-galaxies-could-predict-the-milky-ways-future","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/au\/62643\/","title":{"rendered":"Dancing dwarf galaxies could predict the Milky Way\u2019s future"},"content":{"rendered":"

A study from the University of Queensland has tracked dwarf galaxies to understand if the evolution of the Milky Way is similar to other parts of the Universe.<\/p>\n

In collaboration with the Australian National University\u2019s Research School of Astronomy and Astrophysics, among others, the Delegate survey found that a cosmic dance could be the future of the Milky Way as it tracks a course to collide with neighbouring dwarf and spiral galaxies<\/a>.<\/p>\n

\u201cThe Milky Way will merge with Andromeda and their respective smaller dwarf galaxies in the next 2.5 billion years, and while there has been a lot of research into what\u2019s happening in our Local Group, we don\u2019t know how typical it is,\u201d explained Dr Sarah Sweet from Queensland\u2019s School of Mathematics and Physics.<\/p>\n

Spiral and dwarf galaxies combine to form satellite structures<\/p>\n

The team studied two similar spiral galaxies<\/a> that are about 3 billion years ahead of the Milky Way and Andromeda in merging.<\/p>\n

The research showed that these galaxies \u2013 NGC5713 and NGC5719 \u2013 combine as if they were dancing with the closely located dwarf satellites rotating around them.<\/p>\n

Without these mergers, the galaxies might remain in a randomly distributed cloud, not arranged in beautiful, coherent planes like those around the Milky Way and Andromeda.<\/p>\n

Refining models of galaxy evolution<\/p>\n

\u201cThis may offer our clearest look yet at how structures like the Milky Way\u2019s satellite system form, and how they will evolve,\u201d Sweet said.<\/p>\n

\u201cUnderstanding our galaxy\u2019s likely future helps us refine models of galaxy evolution, dark matter<\/a>, and cosmic structure and beyond that, it gives us perspective.\u201d<\/p>\n

The research shows that the Milky Way is part of a much larger cosmic story, one that unfolds over billions of years, involving dances of dwarf galaxies and the shaping of the Universe itself.<\/p>\n

Comparisons of the Milky Way and other twin-like systems<\/p>\n

Several papers will be published as part of the Delegate survey to confirm the galaxy evolution findings.<\/p>\n

Research paper lead, ANU Professor Helmut Jerjen, said the researchers were comparing our local galaxy group to other twin-like systems.<\/p>\n

Professor Jerjen commented: \u201cWe will test whether the Milky Way and Andromeda Local Group is a poster child or a cosmic outlier. Until we know this, our ability to generalise findings from the Local Group of galaxies to understand galaxy evolution in a broader cosmological context is hampered.\u201d<\/p>\n

For example, there is persisting tension between local galaxy group observations and the world\u2019s most sophisticated cosmological computer simulations, such as the observed placement of dwarfs preferentially in satellite planes around their hosts.<\/p>\n

New simulations to uncover the future of our galaxy<\/p>\n

The new observations from the Delegate survey suggest that current simulations of spiral and dwarf galaxies need to be overhauled.<\/p>\n

Professor Jerjen concluded: Will the Milky Way begin its own dance with Andromeda, with the smaller dwarf galaxies rotating around them? That\u2019s what we want to find out.\u201d<\/p>\n","protected":false},"excerpt":{"rendered":"A study from the University of Queensland has tracked dwarf galaxies to understand if the evolution of the…\n","protected":false},"author":2,"featured_media":62644,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[17708,64,63,292,128],"class_list":["post-62643","post","type-post","status-publish","format-standard","has-post-thumbnail","category-science","tag-astrophysics","tag-au","tag-australia","tag-physics","tag-science"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/posts\/62643","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/comments?post=62643"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/posts\/62643\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/media\/62644"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/media?parent=62643"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/categories?post=62643"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/tags?post=62643"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}