{"id":30795,"date":"2021-01-26T15:35:00","date_gmt":"2021-01-26T08:35:00","guid":{"rendered":"https:\/\/ttud.com.vn\/?p=30795"},"modified":"2022-01-04T15:44:19","modified_gmt":"2022-01-04T08:44:19","slug":"thien-ha-khien-dai-ngan-ha-bi-meo","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/thien-ha-khien-dai-ngan-ha-bi-meo\/","title":{"rendered":"Thi\u00ean h\u00e0 khi\u1ebfn d\u00e0i Ng\u00e2n H\u00e0 b\u1ecb m\u00e9o"},"content":{"rendered":"\n

D\u1eef li\u1ec7u t\u1eeb Tr\u1ea1m quan s\u00e1t b\u1ea7u tr\u1eddi k\u1ef9 thu\u1eadt s\u1ed1 Sloan v\u00e0 t\u00e0u v\u0169 tr\u1ee5 Gaia cho th\u1ea5y va ch\u1ea1m v\u1edbi thi\u00ean h\u00e0 kh\u00e1c t\u1ea1o ra h\u00ecnh d\u1ea1ng m\u00e9o k\u1ef3 l\u1ea1 c\u1ee7a d\u1ea3i Ng\u00e2n H\u00e0.<\/p>\n\n\n\n

\"M\u00f4
M\u00f4 ph\u1ecfng d\u1ea3i Ng\u00e2n H\u00e0. \u1ea2nh: National Geographic.<\/em><\/figcaption><\/figure><\/div>\n\n\n\n

Gi\u1edbi nghi\u00ean c\u1ee9u bi\u1ebft r\u1ea5t \u00edt v\u1ec1 h\u00ecnh d\u1ea1ng cong c\u1ee7a d\u1ea3i Ng\u00e2n H\u00e0 do kh\u00f3 kh\u0103n trong vi\u1ec7c nghi\u00ean c\u1ee9u thi\u00ean h\u00e0 t\u1eeb b\u00ean trong, nh\u01b0ng h\u1ecd \u0111\u00e3 quan s\u00e1t nhi\u1ec1u bi\u1ebfn d\u1ea1ng t\u01b0\u01a1ng t\u1ef1 \u1edf kho\u1ea3ng 50 – 70 thi\u00ean h\u00e0 h\u00ecnh xo\u1eafn \u1ed1c. K\u1ebft qu\u1ea3 m\u1edbi cho th\u1ea5y d\u1ea3i Ng\u00e2n H\u00e0 b\u1ecb m\u00e9o do t\u01b0\u01a1ng t\u00e1c v\u1edbi m\u1ed9t thi\u00ean h\u00e0 kh\u00e1c, di\u1ec5n ra kh\u00e1 g\u1ea7n \u0111\u00e2y so v\u1edbi \u0111\u1ed9 tu\u1ed5i 13,7 t\u1ef7 n\u0103m c\u1ee7a v\u0169 tr\u1ee5. Theo c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u, c\u00e1ch \u0111\u00e2y kho\u1ea3ng 3 t\u1ef7 n\u0103m, m\u1ed9t thi\u00ean h\u00e0 v\u1ec7 tinh \u0111\u1ebfn g\u1ea7n d\u1ea3i Ng\u00e2n H\u00e0 t\u1edbi m\u1ee9c t\u1ea1o ra hi\u1ec7u \u1ee9ng g\u1ee3n s\u00f3ng v\u1eabn c\u00f3 th\u1ec3 quan s\u00e1t \u1edf nh\u1eefng ng\u00f4i sao trong thi\u00ean h\u00e0 c\u1ee7a ch\u00fang ta.<\/p>\n\n\n\n

“H\u00ecnh dung th\u00f4ng th\u01b0\u1eddng c\u1ee7a ch\u00fang ta v\u1ec1 m\u1ed9t thi\u00ean h\u00e0 xo\u1eafn \u1ed1c l\u00e0 d\u1ea1ng \u0111\u0129a ph\u1eb3ng, xoay tr\u00f2n \u0111\u1ec1u \u0111\u1ec1u quanh t\u00e2m c\u1ee7a n\u00f3”, tr\u01b0\u1edfng nh\u00f3m nghi\u00ean c\u1ee9u Xinlun Cheng \u1edf \u0110\u1ea1i h\u1ecdc Virginia, cho bi\u1ebft. “Nh\u01b0ng th\u1ef1c t\u1ebf ph\u1ee9c t\u1ea1p h\u01a1n nhi\u1ec1u”.<\/p>\n\n\n\n

C\u00e1c nh\u00e0 khoa h\u1ecdc r\u1ea5t kh\u00f3 l\u1eadp b\u1ea3n \u0111\u1ed3 h\u00ecnh d\u00e1ng cong c\u1ee7a d\u1ea3i Ng\u00e2n H\u00e0 b\u1edfi Tr\u00e1i \u0110\u1ea5t n\u1eb1m s\u00e2u b\u00ean trong thi\u00ean h\u00e0. Ngay c\u1ea3 khi t\u00e0u v\u0169 tr\u1ee5 c\u1ee7a ch\u00fang ta bay ra xa h\u00e0nh tinh, v\u1ec1 m\u1eb7t v\u0169 tr\u1ee5, ph\u1ea7n l\u1edbn t\u00e0u v\u1eabn \u1edf b\u00ean trong bong b\u00f3ng do M\u1eb7t Tr\u1eddi t\u1ea1o th\u00e0nh xung quanh Tr\u00e1i \u0110\u1ea5t. Thay v\u00e0o \u0111\u00f3, nh\u00f3m nghi\u00ean c\u1ee9u c\u1ee7a Cheng t\u00ecm hi\u1ec3u v\u1ec1 \u0111i\u1ec1u n\u00e0y th\u00f4ng qua nghi\u00ean c\u1ee9u chuy\u1ec3n \u0111\u1ed9ng v\u00e0 v\u1ecb tr\u00ed c\u1ee7a nh\u1eefng ng\u00f4i sao trong d\u1ea3i Ng\u00e2n H\u00e0. K\u1ebft qu\u1ea3 m\u1edbi cho th\u1ea5y c\u1ee9 440 tri\u1ec7u n\u0103m, tr\u1ea1ng th\u00e1i m\u00e9o c\u1ee7a \u0111\u0129a thi\u00ean h\u00e0 l\u1ea1i lan t\u1ecfa.<\/p>\n\n\n\n

“H\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng b\u1ea1n \u0111ang \u0111\u1ee9ng xem tr\u1eadn \u0111\u1ea5u b\u00f3ng \u0111\u00e1 v\u00e0 \u0111\u00e1m \u0111\u00f4ng b\u1eaft \u0111\u1ea7u t\u1ea1o h\u00ecnh s\u00f3ng”, Cheng gi\u1ea3i th\u00edch. “T\u1ea5t c\u1ea3 nh\u1eefng g\u00ec b\u1ea1n c\u1ea7n l\u00e0m l\u00e0 \u0111\u1ee9ng l\u00ean v\u00e0 ng\u1ed3i xu\u1ed1ng, nh\u01b0ng hi\u1ec7u \u1ee9ng l\u00e0 c\u01a1n s\u00f3ng s\u1ebd lan kh\u1eafp s\u00e2n v\u1eadn \u0111\u1ed9ng. Tr\u1ea1ng th\u00e1i m\u00e9o c\u1ee7a thi\u00ean h\u00e0 c\u0169ng v\u1eady, c\u00e1c ng\u00f4i sao di chuy\u1ec3n l\u00ean xu\u1ed1ng, nh\u01b0ng c\u01a1n s\u00f3ng truy\u1ec1n quanh thi\u00ean h\u00e0”.<\/p>\n\n\n\n

Nh\u00f3m nghi\u00ean c\u1ee9u t\u1eadp h\u1ee3p th\u00f4ng tin b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng Th\u00ed nghi\u1ec7m ti\u1ebfn h\u00f3a thi\u00ean h\u00e0 \u1edf \u0110\u00e0i quan s\u00e1t m\u0169i Apache (APOGEE), n\u01a1i theo d\u00f5i h\u00e0ng tr\u0103m ngh\u00ecn ng\u00f4i sao \u1edf d\u1ea3i Ng\u00e2n H\u00e0 trong th\u1eadp k\u1ef7 qua. APOGEE thu th\u1eadp quang ph\u1ed5 ng\u00f4i sao, hay nh\u1eefng b\u01b0\u1edbc s\u00f3ng \u00e1nh s\u00e1ng do ng\u00f4i sao ph\u00e1t ra, trong l\u00fac kh\u1ea3o s\u00e1t. Sau \u0111\u00f3, c\u00e1c nh\u00e0 thi\u00ean v\u0103n h\u1ecdc b\u1ed5 sung th\u00eam quan s\u00e1t t\u1eeb v\u1ec7 tinh Gaia c\u1ee7a C\u01a1 quan V\u0169 tr\u1ee5 ch\u00e2u \u00c2u (ESA), thi\u1ebft b\u1ecb \u0111o kho\u1ea3ng c\u00e1ch \u0111\u1ed1i v\u1edbi nh\u1eefng ng\u00f4i sao trong d\u1ea3i Ng\u00e2n H\u00e0. K\u1ebft h\u1ee3p hai ngu\u1ed3n d\u1eef li\u1ec7u, h\u1ecd c\u00f3 th\u1ec3 l\u1eadp b\u1ea3n \u0111\u1ed3 3D v\u1ec1 c\u00e1c sao \u1edf d\u1ea3i Ng\u00e2n H\u00e0 k\u00e8m theo t\u1ed1c \u0111\u1ed9 v\u00e0 th\u00e0nh ph\u1ea7n c\u1ea5u t\u1ea1o.<\/p>\n\n\n\n

Nghi\u00ean c\u1ee9u c\u00f3 th\u1ec3 gi\u00fap c\u00e1c nh\u00e0 thi\u00ean v\u0103n h\u1ecdc t\u1ea1o ra m\u00f4 h\u00ecnh ch\u00ednh x\u00e1c h\u01a1n cho va ch\u1ea1m gi\u1eefa d\u1ea3i Ng\u00e2n H\u00e0 v\u1edbi thi\u00ean h\u00e0 Andromeda (M31) kho\u1ea3ng 4,5 t\u1ef7 n\u0103m tu\u1ed5i. Nh\u00f3m t\u00e1c gi\u1ea3 nghi\u00ean c\u1ee9u c\u00f4ng b\u1ed1 ph\u00e1t hi\u1ec7n t\u1ea1i h\u1ed9i th\u1ea3o tr\u1ef1c tuy\u1ebfn c\u1ee7a Hi\u1ec7p h\u1ed9i Thi\u00ean v\u0103n h\u1ecdc M\u1ef9 k\u00e9o d\u00e0i t\u1eeb ng\u00e0y 11\/1 \u0111\u1ebfn 15\/1.<\/p>\n\n\n\n

An Khang<\/strong>\u00a0(Theo\u00a0Space<\/em>)<\/p>\n\n\n\n

https:\/\/vnexpress.net\/thien-ha-khien-dai-ngan-ha-bi-meo-4224726.html<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

D\u1eef li\u1ec7u t\u1eeb Tr\u1ea1m quan s\u00e1t b\u1ea7u tr\u1eddi k\u1ef9 thu\u1eadt s\u1ed1 Sloan v\u00e0 t\u00e0u v\u0169 tr\u1ee5 Gaia cho th\u1ea5y va ch\u1ea1m v\u1edbi thi\u00ean h\u00e0 kh\u00e1c t\u1ea1o ra h\u00ecnh d\u1ea1ng m\u00e9o k\u1ef3 l\u1ea1 c\u1ee7a d\u1ea3i Ng\u00e2n H\u00e0. Gi\u1edbi nghi\u00ean c\u1ee9u bi\u1ebft r\u1ea5t \u00edt v\u1ec1 h\u00ecnh d\u1ea1ng cong c\u1ee7a d\u1ea3i Ng\u00e2n H\u00e0 do kh\u00f3 kh\u0103n trong vi\u1ec7c […]<\/p>\n","protected":false},"author":23,"featured_media":30796,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-30795","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"_links":{"self":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/30795","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/users\/23"}],"replies":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/comments?post=30795"}],"version-history":[{"count":1,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/30795\/revisions"}],"predecessor-version":[{"id":30797,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/30795\/revisions\/30797"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media\/30796"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=30795"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=30795"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=30795"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}