3I\/ATLAS: Initial observations suggest a nucleus size ranging from 0.32 to 5.6 kilometers, with a most likely diameter under 1 kilometer. The comet’s coma, a cloud of gas and dust, is composed of carbon dioxide, water vapour, carbon monoxide, and carbonyl sulfide. Notably, it emits atomic nickel vapour and cyanide gas, a first for interstellar comets.<\/p>\n
2I\/Borisov: Borisov was the first interstellar comet. Estimated nucleus size between 0.4 and 0.5 kilometers. Its coma contains water vapour, carbon monoxide, and other typical cometary compounds. A significant discovery was the detection of atomic nickel vapour in its coma, observed at a distance of 2.322 AU from the Sun.<\/p>\n","protected":false},"excerpt":{"rendered":"3I\/ATLAS: Initial observations suggest a nucleus size ranging from 0.32 to 5.6 kilometers, with a most likely diameter…\n","protected":false},"author":2,"featured_media":200035,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[125078,14804,125100,47115,69880,125116,125106,64,63,22114,125087,125103,125084,125104,125107,125081,125080,125097,125083,125092,125110,125096,125101,125118,125112,125105,125095,105548,76700,125082,125113,125089,125115,34967,11046,125085,125098,125111,44337,125108,125091,125079,43730,125114,18829,125119,125094,14805,131,33972,125088,326,2568,128,291,125099,29361,125090,125109,125093,49239,125117,125102,125120,125086],"class_list":["post-200034","post","type-post","status-publish","format-standard","has-post-thumbnail","category-science","tag-2i-borisov","tag-3i-atlas","tag-asteroid-vs-comet","tag-astronomy-discoveries","tag-astronomy-news","tag-astronomy-update","tag-astrophysics-research","tag-au","tag-australia","tag-carbon-dioxide","tag-carbon-monoxide","tag-celestial-object","tag-comet-activity","tag-comet-activity-analysis","tag-comet-comparison","tag-comet-composition","tag-comet-discovery","tag-comet-imaging","tag-comet-nucleus","tag-comet-research","tag-comet-study","tag-comet-tail","tag-comet-tracking","tag-cometary-discoveries","tag-cometary-dynamics","tag-cometary-gas-emissions","tag-cosmic-chemistry","tag-cosmic-event","tag-cosmic-exploration","tag-cosmic-objects","tag-cosmic-survey","tag-cyanide","tag-deep-space-object","tag-early-universe","tag-esa","tag-exomars-trace-gas-orbiter","tag-galactic-origin","tag-galactic-travel","tag-hubble-space-telescope","tag-hyperbolic-orbit","tag-hyperbolic-trajectory","tag-oumuamua","tag-interstellar-comet","tag-interstellar-exploration","tag-interstellar-object","tag-interstellar-phenomena","tag-interstellar-visitor","tag-milky-way","tag-nasa","tag-near-earth-object","tag-nickel","tag-outer-space","tag-planetary-science","tag-science","tag-solar-system","tag-solar-system-entry","tag-space-missions","tag-space-observation","tag-space-observation-news","tag-space-phenomena","tag-space-science","tag-space-science-news","tag-space-telescopes","tag-universe-research","tag-water-vapor"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/posts\/200034","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=200034"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/posts\/200034\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/media\/200035"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/media?parent=200034"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/categories?post=200034"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/tags?post=200034"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}