{"id":14320,"date":"2024-08-13T04:16:58","date_gmt":"2024-08-13T04:16:58","guid":{"rendered":"https:\/\/www.lifescienceart.com\/?p=14320"},"modified":"2024-08-13T04:16:58","modified_gmt":"2024-08-13T04:16:58","slug":"gaia-captures-dazzling-image-of-2-8-million-stars-in-the-milky-way","status":"publish","type":"post","link":"https:\/\/www.lifescienceart.com\/vi\/science\/astronomy\/gaia-captures-dazzling-image-of-2-8-million-stars-in-the-milky-way\/","title":{"rendered":"Gaia ghi l\u1ea1i h\u00ecnh \u1ea3nh ngo\u1ea1n m\u1ee5c c\u1ee7a 2,8 tri\u1ec7u ng\u00f4i sao trong D\u1ea3i Ng\u00e2n h\u00e0"},"content":{"rendered":"

Gaia ghi l\u1ea1i h\u00ecnh \u1ea3nh cho\u00e1ng ng\u1ee3p c\u1ee7a 2,8 tri\u1ec7u ng\u00f4i sao trong D\u1ea3i Ng\u00e2n h\u00e0<\/h2>\n\n

Kh\u1ea3o s\u00e1t v\u1ec1 c\u00e1c ng\u00f4i sao \u0111\u00e1ng kinh ng\u1ea1c c\u1ee7a Gaia<\/h2>\n\n

K\u00ednh thi\u00ean v\u0103n kh\u1ea3o s\u00e1t c\u00e1c ng\u00f4i sao Gaia c\u1ee7a C\u01a1 quan V\u0169 tr\u1ee5 Ch\u00e2u \u00c2u \u0111\u00e3 ch\u1ee5p \u0111\u01b0\u1ee3c m\u1ed9t lo\u1ea1t h\u00ecnh \u1ea3nh tuy\u1ec7t \u0111\u1eb9p v\u1ec1 thi\u00ean h\u00e0 D\u1ea3i Ng\u00e2n h\u00e0, h\u00e9 l\u1ed9 kho\u1ea3ng 2,8 tri\u1ec7u ng\u00f4i sao t\u1ea1i m\u1ed9t v\u00f9ng t\u1eadp trung d\u00e0y \u0111\u1eb7c g\u1ea7n t\u00e2m thi\u00ean h\u00e0.<\/p>\n\n

Quan s\u00e1t r\u00f5 r\u00e0ng v\u1ec1 Trung t\u00e2m c\u1ee7a thi\u00ean h\u00e0<\/h2>\n\n

H\u00ecnh \u1ea3nh c\u1ee5 th\u1ec3 n\u00e0y \u0111\u01b0\u1ee3c ch\u1ee5p v\u00e0o ng\u00e0y 7 th\u00e1ng 2 n\u0103m 2017, m\u00f4 t\u1ea3 m\u1ed9t khu v\u1ef1c c\u00e1ch t\u00e2m thi\u00ean h\u00e0 hai \u0111\u1ed9. L\u01b0\u1ee3ng b\u1ee5i gi\u1eefa c\u00e1c v\u00ec sao t\u01b0\u01a1ng \u0111\u1ed1i \u00edt gi\u00fap Gaia c\u00f3 th\u1ec3 quan s\u00e1t r\u00f5 r\u00e0ng v\u00e0o khu v\u1ef1c b\u00ean trong c\u1ee7a thi\u00ean h\u00e0 c\u1ee7a ch\u00fang ta.<\/p>\n\n

\u0110i\u1ec1u tra d\u00e2n s\u1ed1 c\u00e1c ng\u00f4i sao<\/h2>\n\n

H\u00ecnh \u1ea3nh bao ph\u1ee7 0,6 \u0111\u1ed9 vu\u00f4ng tr\u00ean b\u1ea7u tr\u1eddi, v\u1edbi m\u1eadt \u0111\u1ed9 \u01b0\u1edbc t\u00ednh l\u00e0 4,6 tri\u1ec7u ng\u00f4i sao tr\u00ean m\u1ed7i \u0111\u1ed9 vu\u00f4ng. \u0110i\u1ec1u n\u00e0y cho th\u1ea5y s\u1ebd c\u00f3 kho\u1ea3ng 2,8 tri\u1ec7u \u0111i\u1ec3m s\u00e1ng trong \u1ea3nh, m\u1eb7c d\u00f9 ch\u01b0a ai \u0111\u1ebfm ch\u00fang.<\/p>\n\n

Nhi\u1ec7m v\u1ee5 c\u1ee7a Gaia: l\u1eadp b\u1ea3n \u0111\u1ed3 cho D\u1ea3i Ng\u00e2n h\u00e0<\/h2>\n\n

\u0110\u01b0\u1ee3c ph\u00f3ng v\u00e0o n\u0103m 2013, Gaia \u0111ang th\u1ef1c hi\u1ec7n s\u1ee9 m\u1ec7nh k\u00e9o d\u00e0i n\u0103m n\u0103m \u0111\u1ec3 l\u1eadp b\u1ea3n \u0111\u1ed3 cho 1 t\u1ef7 ng\u00f4i sao, hay g\u1ea7n b\u1eb1ng 1% D\u1ea3i Ng\u00e2n h\u00e0. D\u1ef1 \u00e1n \u0111\u1ea7y tham v\u1ecdng n\u00e0y nh\u1eb1m m\u1ee5c \u0111\u00edch t\u1ea1o ra b\u1ea3n \u0111\u1ed3 chi ti\u1ebft v\u1ec1 thi\u00ean h\u00e0 c\u1ee7a ch\u00fang ta v\u00e0 gi\u00fap c\u00e1c nh\u00e0 thi\u00ean v\u0103n hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 qu\u00e1 tr\u00ecnh ti\u1ebfn h\u00f3a c\u1ee7a n\u00f3.<\/p>\n\n

Ph\u00e9p \u0111o quang ph\u1ed5 thi\u00ean v\u0103n: Nghi\u00ean c\u1ee9u chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a sao<\/h2>\n\n

Gaia nghi\u00ean c\u1ee9u chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a t\u1eebng ng\u00f4i sao b\u1eb1ng m\u1ed9t k\u1ef9 thu\u1eadt g\u1ecdi l\u00e0 ph\u00e9p \u0111o quang ph\u1ed5 thi\u00ean v\u0103n. B\u1eb1ng c\u00e1ch l\u1eadp danh m\u1ee5c v\u00e0 ph\u00e2n t\u00edch c\u00e1c chuy\u1ec3n \u0111\u1ed9ng n\u00e0y, c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u hy v\u1ecdng s\u1ebd c\u00f3 \u0111\u01b0\u1ee3c hi\u1ec3u bi\u1ebft s\u00e2u s\u1eafc v\u1ec1 l\u1ecbch s\u1eed c\u1ee7a D\u1ea3i Ng\u00e2n h\u00e0 v\u00e0 d\u1ef1 \u0111o\u00e1n t\u01b0\u01a1ng lai c\u1ee7a n\u00f3.<\/p>\n\n

H\u00ecnh \u1ea3nh \u0111\u1ed5 d\u1eef li\u1ec7u: Ghi l\u1ea1i \u0111\u00e1m \u0111\u00f4ng c\u00e1c ng\u00f4i sao<\/h2>\n\n

Trong khi Gaia th\u01b0\u1eddng t\u1eadp trung v\u00e0o t\u1eebng ng\u00f4i sao, th\u1ec9nh tho\u1ea3ng n\u00f3 c\u0169ng s\u1ebd g\u1eb7p ph\u1ea3i nh\u1eefng v\u00f9ng kh\u00f4ng gian \u0111\u00f4ng \u0111\u00fac \u0111\u1ebfn m\u1ee9c kh\u00f3 c\u00f3 th\u1ec3 \u0111o chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a t\u1eebng ng\u00f4i sao. Trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p nh\u01b0 v\u1eady, Gaia s\u1ebd g\u1eedi xu\u1ed1ng m\u1ed9t h\u00ecnh \u1ea3nh \u0111\u1ed5 d\u1eef li\u1ec7u c\u1ee7a to\u00e0n b\u1ed9 khu v\u1ef1c. H\u00ecnh \u1ea3nh v\u1ec1 c\u00e1c ng\u00f4i sao kh\u1ed5ng l\u1ed3 g\u1ea7n \u0111\u00e2y l\u00e0 m\u1ed9t v\u00ed d\u1ee5 v\u1ec1 h\u00ecnh \u1ea3nh \u0111\u1ed5 d\u1eef li\u1ec7u nh\u01b0 v\u1eady.<\/p>\n\n

Di s\u1ea3n c\u1ee7a Gaia: \u0110\u1ecbnh h\u00ecnh l\u1ea1i g\u00f3c nh\u00ecn v\u1ec1 v\u0169 tr\u1ee5 c\u1ee7a ch\u00fang ta<\/h2>\n\n

M\u1eb7c d\u00f9 th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng trong kh\u00f4ng gian t\u01b0\u01a1ng \u0111\u1ed1i ng\u1eafn, Gaia \u0111\u00e3 c\u00f3 nh\u1eefng \u0111\u00f3ng g\u00f3p \u0111\u00e1ng k\u1ec3 cho vi\u1ec7c hi\u1ec3u bi\u1ebft c\u1ee7a ch\u00fang ta v\u1ec1 v\u0169 tr\u1ee5. Danh m\u1ee5c \u0111\u1ea7u ti\u00ean g\u1ed3m 1 t\u1ef7 ng\u00f4i sao c\u1ee7a n\u00f3, \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 v\u00e0o n\u0103m 2016, \u0111\u00e3 cung c\u1ea5p r\u1ea5t nhi\u1ec1u d\u1eef li\u1ec7u m\u1edbi cho c\u00e1c nh\u00e0 thi\u00ean v\u0103n h\u1ecdc. M\u1ed9t danh m\u1ee5c th\u1ee9 hai d\u1ef1 ki\u1ebfn s\u1ebd \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 v\u00e0o n\u0103m 2018, c\u00f9ng v\u1edbi c\u00e1c danh m\u1ee5c ti\u1ebfp theo \u0111\u01b0\u1ee3c l\u00ean k\u1ebf ho\u1ea1ch v\u00e0o n\u0103m 2020 v\u00e0 2022 n\u1ebfu nhi\u1ec7m v\u1ee5 c\u1ee7a Gaia \u0111\u01b0\u1ee3c k\u00e9o d\u00e0i.<\/p>\n\n

H\u00e9 l\u1ed9 nh\u1eefng b\u00ed m\u1eadt c\u1ee7a v\u0169 tr\u1ee5 t\u1eeb d\u1eef li\u1ec7u c\u1ee7a Gaia<\/h2>\n\n

Nghi\u00ean c\u1ee9u d\u1ef1a tr\u00ean d\u1eef li\u1ec7u c\u1ee7a Gaia hi\u1ec7n \u0111\u00e3 h\u00e9 l\u1ed9 nh\u1eefng hi\u1ec3u bi\u1ebft s\u00e2u s\u1eafc h\u1ea5p d\u1eabn. V\u00ed d\u1ee5, c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 ph\u00e1t hi\u1ec7n ra r\u1eb1ng m\u1ed9t ng\u00f4i sao t\u00ean l\u00e0 Gliese 710 s\u1ebd \u0111i qua \u0110\u00e1m m\u00e2y Oort b\u00ean trong, m\u1ed9t l\u1edbp m\u1ea3nh v\u1ee1 b\u0103ng gi\u00e1 bao quanh h\u1ec7 m\u1eb7t tr\u1eddi, trong kho\u1ea3ng 1,3 tri\u1ec7u n\u0103m n\u1eefa. S\u1ef1 ki\u1ec7n n\u00e0y c\u00f3 kh\u1ea3 n\u0103ng g\u00e2y ra m\u1ed9t v\u1ee5 b\u1eafn ph\u00e1 sao ch\u1ed5i v\u00e0o H\u1ec7 m\u1eb7t tr\u1eddi c\u1ee7a ch\u00fang ta.<\/p>\n\n

Giao th\u00f4ng c\u1ee7a c\u00e1c ng\u00f4i sao trong khu ph\u1ed1 c\u1ee7a ch\u00fang ta<\/h2>\n\n

D\u1eef li\u1ec7u c\u1ee7a Gaia c\u0169ng ch\u1ec9 ra r\u1eb1ng c\u00f3 nhi\u1ec1u “giao th\u00f4ng sao” h\u01a1n nhi\u1ec1u trong khu v\u1ef1c kh\u00f4ng gian c\u1ee7a ch\u00fang ta so v\u1edbi \u01b0\u1edbc t\u00ednh tr\u01b0\u1edbc \u0111\u00e2y. Trung b\u00ecnh, c\u00f3 87 ng\u00f4i sao \u0111i v\u00e0o ph\u1ea1m vi 6,5 n\u0103m \u00e1nh s\u00e1ng t\u00ednh t\u1eeb m\u1eb7t tr\u1eddi m\u1ed7i tri\u1ec7u n\u0103m.<\/p>\n\n

L\u1eddi h\u1ee9a c\u1ee7a Gaia: M\u1ed9t kho b\u00e1u d\u1eef li\u1ec7u thi\u00ean v\u0103n<\/h2>\n\n

Gaia \u0111ang thu th\u1eadp m\u1ed9t l\u01b0\u1ee3ng d\u1eef li\u1ec7u kh\u1ed5ng l\u1ed3, \u01b0\u1edbc t\u00ednh s\u1ebd l\u1ea5p \u0111\u1ea7y 1,5 tri\u1ec7u \u0111\u0129a CD-ROM trong h\u01a1n n\u0103m n\u0103m. D\u1eef li\u1ec7u n\u00e0y s\u1ebd c\u1ea7n \u0111\u01b0\u1ee3c x\u1eed l\u00fd s\u00e2u r\u1ed9ng tr\u01b0\u1edbc khi c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n t\u00edch \u0111\u1ea7y \u0111\u1ee7, nh\u01b0ng n\u00f3 c\u00f3 kh\u1ea3 n\u0103ng m\u1edf ra v\u00f4 s\u1ed1 kh\u00e1m ph\u00e1 m\u1edbi v\u1ec1 thi\u00ean h\u00e0 c\u1ee7a ch\u00fang ta v\u00e0 v\u0169 tr\u1ee5 b\u00ean ngo\u00e0i.<\/p>","protected":false},"excerpt":{"rendered":"

Gaia ghi l\u1ea1i h\u00ecnh \u1ea3nh cho\u00e1ng ng\u1ee3p c\u1ee7a 2,8 tri\u1ec7u ng\u00f4i sao trong D\u1ea3i Ng\u00e2n h\u00e0 Kh\u1ea3o s\u00e1t v\u1ec1 c\u00e1c ng\u00f4i sao \u0111\u00e1ng kinh ng\u1ea1c c\u1ee7a Gaia K\u00ednh thi\u00ean v\u0103n…<\/p>\n","protected":false},"author":6,"featured_media":24052,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[437],"tags":[19238,564,97,1232,694,1447,435],"class_list":["post-14320","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-astronomy","tag-gaia","tag-exploration","tag-science","tag-space","tag-milky-way","tag-stars","tag-astronomy"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/14320","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/comments?post=14320"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/14320\/revisions"}],"predecessor-version":[{"id":14321,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/14320\/revisions\/14321"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/media\/24052"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/media?parent=14320"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/categories?post=14320"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/tags?post=14320"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}