{"id":228416,"date":"2026-01-06T05:17:37","date_gmt":"2026-01-06T11:17:37","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2026\/01\/betelgeuses-elusive-companion-star-siwarhas-wake-detected"},"modified":"2026-01-06T05:17:37","modified_gmt":"2026-01-06T11:17:37","slug":"betelgeuses-elusive-companion-star-siwarhas-wake-detected","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2026\/01\/betelgeuses-elusive-companion-star-siwarhas-wake-detected","title":{"rendered":"Betelgeuse\u2019s elusive companion star: Siwarha\u2019s \u2018wake\u2019 detected"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/betelgeuses-elusive-companion-star-siwarhas-wake-detected.jpg\"><\/a><\/p>\n<p>Using new observations from NASA\u2019s Hubble Space Telescope and ground-based observatories, astronomers have tracked the influence of a recently discovered companion star, Siwarha, on the gas around Betelgeuse. The research, by scientists at the Center for Astrophysics | Harvard &amp; Smithsonian (CfA), reveals a trail of dense gas swirling through Betelgeuse\u2019s vast, extended atmosphere, shedding light on why the giant star\u2019s brightness and atmosphere have changed in strange and unusual ways.<\/p>\n<p>The results of the new study were presented Monday at a news conference at the <a href=\"https:\/\/www.youtube.com\/c\/AASPressOffice\" target=\"_blank\">247th meeting of the American Astronomical Society<\/a> in Phoenix. The paper has been accepted for publication in <i>The Astrophysical Journal<\/i> and is <a href=\"https:\/\/arxiv.org\/abs\/2601.00470\" target=\"_blank\">available<\/a> on the <i>arXiv<\/i> preprint server.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Using new observations from NASA\u2019s Hubble Space Telescope and ground-based observatories, astronomers have tracked the influence of a recently discovered companion star, Siwarha, on the gas around Betelgeuse. The research, by scientists at the Center for Astrophysics | Harvard &amp; Smithsonian (CfA), reveals a trail of dense gas swirling through Betelgeuse\u2019s vast, extended atmosphere, shedding [\u2026]<\/p>\n","protected":false},"author":427,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-228416","post","type-post","status-publish","format-standard","hentry","category-space"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/228416","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\/427"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=228416"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/228416\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=228416"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=228416"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=228416"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}