{"id":28780,"date":"2019-08-07T21:15:00","date_gmt":"2019-08-07T14:15:00","guid":{"rendered":"https:\/\/ttud.com.vn\/?p=28780"},"modified":"2021-10-03T21:16:46","modified_gmt":"2021-10-03T14:16:46","slug":"phat-hien-moi-dai-ngan-ha-venh-va-xoan-chu-khong-phang","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/phat-hien-moi-dai-ngan-ha-venh-va-xoan-chu-khong-phang\/","title":{"rendered":"Ph\u00e1t hi\u1ec7n m\u1edbi: D\u1ea3i ng\u00e2n h\u00e0 v\u00eanh v\u00e0 xo\u1eafn ch\u1ee9 kh\u00f4ng ph\u1eb3ng"},"content":{"rendered":"\n<p><strong>Theo c\u00f4ng b\u1ed1 m\u1edbi \u0111\u00e2y c\u1ee7a c\u00e1c nh\u00e0 thi\u00ean v\u0103n h\u1ecdc, D\u1ea3i ng\u00e2n h\u00e0 (milky way) kh\u00f4ng ph\u1ea3i d\u1ea1ng ph\u1eb3ng m\u00e0 b\u1ecb v\u00eanh v\u00e0 xo\u1eafn.<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"blob:https:\/\/ttud.com.vn\/90b2c771-4c95-4106-a706-e534b4868f5c\" alt=\"\"\/><\/figure>\n\n\n\n<p><em>Quang c\u1ea3nh D\u1ea3i ng\u00e2n h\u00e0 nh\u00ecn t\u1eeb m\u1ed9t khu v\u1ef1c thu\u1ed9c C\u00f4ng vi\u00ean Qu\u1ed1c gia Puyehue g\u1ea7n th\u00e0nh ph\u1ed1 Osorno, Chile, ng\u00e0y 8-5-2008<\/em><\/p>\n\n\n\n<p>K\u1ebft lu\u1eadn \u0111\u01b0\u1ee3c \u0111\u01b0a ra sau khi h\u1ecd l\u1eadp m\u1ed9t b\u1ea3n \u0111\u1ed3 ch\u00ednh x\u00e1c nh\u1ea5t t\u1eeb tr\u01b0\u1edbc \u0111\u1ebfn nay b\u1eb1ng c\u00e1ch theo d\u00f5i h\u00e0ng ng\u00e0n xung c\u1ee7a c\u00e1c ng\u00f4i sao l\u1edbn v\u1ed1n lan r\u1ed9ng kh\u1eafp thi\u00ean h\u00e0.<\/p>\n\n\n\n<p>V\u1edbi b\u1ea3n \u0111\u1ed3 ba chi\u1ec1u c\u1ee7a D\u1ea3i ng\u00e2n h\u00e0 &#8211; ng\u00f4i nh\u00e0 c\u1ee7a h\u01a1n 100 t\u1ec9 ng\u00f4i sao, bao g\u1ed3m c\u1ea3 m\u1eb7t tr\u1eddi \u0111ang chi\u1ebfu s\u00e1ng xu\u1ed1ng tr\u00e1i \u0111\u1ea5t hi\u1ec7n nay &#8211; c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u0111\u00e3 cung c\u1ea5p c\u00e1i nh\u00ecn to\u00e0n di\u1ec7n v\u1ec1 c\u1ea5u tr\u00fac c\u1ee7a n\u00f3: m\u1ed9t \u0111\u0129a c\u00e1c ng\u00f4i sao g\u1ed3m b\u1ed1n nh\u00e1nh xo\u1eafn \u1ed1c ch\u00ednh v\u00e0 m\u1ed9t khu v\u1ef1c l\u00f5i c\u00f3 d\u1ea1ng thanh.<\/p>\n\n\n\n<p>Nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1edfi c\u00e1c nh\u00e0 thi\u00ean v\u0103n \u0111\u1ebfn t\u1eeb \u0110\u1ea1i h\u1ecdc Warsaw v\u00e0 \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 tr\u00ean t\u1ea1p ch\u00ed Science.<\/p>\n\n\n\n<p>L\u00e2u nay, s\u1ef1 hi\u1ec3u bi\u1ebft v\u1ec1 h\u00ecnh d\u1ea1ng c\u1ee7a thi\u00ean h\u00e0 \u0111\u01b0\u1ee3c d\u1ef1a tr\u00ean c\u00e1c ph\u00e9p \u0111o gi\u00e1n ti\u1ebfp c\u00e1c thi\u00ean th\u1ec3 trong D\u1ea3i ng\u00e2n h\u00e0, sau \u0111\u00f3 k\u1ebft h\u1ee3p v\u1edbi suy lu\u1eadn t\u1eeb c\u00e1c c\u1ea5u tr\u00fac quan s\u00e1t \u0111\u01b0\u1ee3c c\u1ee7a c\u00e1c thi\u00ean h\u00e0 kh\u00e1c trong v\u0169 tr\u1ee5.<\/p>\n\n\n\n<p>Trong khi \u0111\u00f3, b\u1ea3n \u0111\u1ed3 m\u1edbi \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng b\u1eb1ng c\u00e1c ph\u00e9p \u0111o ch\u00ednh x\u00e1c v\u1ec1 kho\u1ea3ng c\u00e1ch t\u1eeb m\u1eb7t tr\u1eddi \u0111\u1ebfn 2.400 ng\u00f4i sao \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 &#8220;bi\u1ebfn Cepheid&#8221; n\u1eb1m r\u1ea3i r\u00e1c tr\u00ean kh\u1eafp thi\u00ean h\u00e0.<\/p>\n\n\n\n<p>C\u00e1c bi\u1ebfn Cepheid l\u00e0 nh\u1eefng ng\u00f4i sao kh\u1ed5ng l\u1ed3 v\u00e0 r\u1ea5t s\u00e1ng ch\u00f3i v\u1edbi \u00e1nh s\u00e1ng ph\u00e1t ra g\u1ea5p 100 \u0111\u1ebfn 10.000 l\u1ea7n so v\u1edbi m\u1eb7t tr\u1eddi, v\u00ec v\u1eady t\u1ea1o \u0111i\u1ec1u ki\u1ec7n \u0111\u1ec3 c\u00e1c nh\u00e0 khoa h\u1ecdc c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n ra ch\u00fang \u1edf v\u00f9ng r\u00eca c\u1ee7a thi\u00ean h\u00e0. Ngo\u00e0i ra, ch\u00fang c\u00f2n kh\u00e1 tr\u1ebb n\u00ean d\u1ec5 \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y \u1edf g\u1ea7n n\u01a1i sinh c\u1ee7a ch\u00fang.<\/p>\n\n\n\n<p>C\u00e1c nh\u00e0 thi\u00ean v\u0103n h\u1ecdc \u0111\u00e3 theo d\u00f5i c\u00e1c &#8220;bi\u1ebfn Cepheid&#8221; b\u1eb1ng k\u00ednh vi\u1ec5n v\u1ecdng Warsaw \u0111\u1eb7t n\u01a1i r\u1eb7ng n\u00fai Andes ch\u1ea1y qua Chile.<\/p>\n\n\n\n<p>B\u1ea3n \u0111\u1ed3 m\u1edbi cho th\u1ea5y \u0111\u0129a thi\u00ean h\u00e0 kh\u00f4ng h\u1ec1 ph\u1eb3ng, tr\u00e1i l\u1ea1i b\u1ecb v\u00eanh \u0111\u00e1ng k\u1ec3 v\u00e0 c\u00f3 \u0111\u1ed9 d\u00e0y kh\u00e1c nhau t\u1eeb n\u01a1i n\u00e0y sang n\u01a1i kh\u00e1c, v\u1edbi \u0111\u1ed9 d\u00e0y t\u0103ng d\u1ea7n \u0111\u01b0\u1ee3c \u0111o t\u1eeb trung t\u00e2m thi\u00ean h\u00e0. Chi\u1ebfc \u0111\u0129a n\u00e0y c\u00f3 \u0111\u01b0\u1eddng k\u00ednh kho\u1ea3ng 140.000 n\u0103m \u00e1nh s\u00e1ng (m\u1ed7i n\u0103m \u00e1nh s\u00e1ng t\u01b0\u01a1ng \u0111\u01b0\u01a1ng kho\u1ea3ng 9.000 t\u1ec9 km).<\/p>\n\n\n\n<p>D\u1ea3i ng\u00e2n h\u00e0 b\u1eaft \u0111\u1ea7u h\u00ecnh th\u00e0nh t\u01b0\u01a1ng \u0111\u1ed1i s\u1edbm sau v\u1ee5 n\u1ed5 Big Bang \u0111\u00e1nh d\u1ea5u s\u1ef1 kh\u1edfi \u0111\u1ea7u c\u1ee7a v\u0169 tr\u1ee5 v\u00e0o kho\u1ea3ng 13,8 t\u1ec9 n\u0103m tr\u01b0\u1edbc. M\u1eb7t tr\u1eddi, t\u1ecda l\u1ea1c \u1edf trung t\u00e2m thi\u00ean h\u00e0 v\u00e0 n\u1eb1m c\u00e1ch l\u1ed7 \u0111en si\u00eau l\u1edbn kho\u1ea3ng 26.000 n\u0103m \u00e1nh s\u00e1ng, h\u00ecnh th\u00e0nh kho\u1ea3ng 4,5 t\u1ec9 n\u0103m tr\u01b0\u1edbc.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Theo c\u00f4ng b\u1ed1 m\u1edbi \u0111\u00e2y c\u1ee7a c\u00e1c nh\u00e0 thi\u00ean v\u0103n h\u1ecdc, D\u1ea3i ng\u00e2n h\u00e0 (milky way) kh\u00f4ng ph\u1ea3i d\u1ea1ng ph\u1eb3ng m\u00e0 b\u1ecb v\u00eanh v\u00e0 xo\u1eafn. Quang c\u1ea3nh D\u1ea3i ng\u00e2n h\u00e0 nh\u00ecn t\u1eeb m\u1ed9t khu v\u1ef1c thu\u1ed9c C\u00f4ng vi\u00ean Qu\u1ed1c gia Puyehue g\u1ea7n th\u00e0nh ph\u1ed1 Osorno, Chile, ng\u00e0y 8-5-2008 K\u1ebft lu\u1eadn \u0111\u01b0\u1ee3c \u0111\u01b0a ra sau khi [&hellip;]<\/p>\n","protected":false},"author":23,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-28780","post","type-post","status-publish","format-standard","hentry","category-tin-tuc"],"_links":{"self":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/28780","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=28780"}],"version-history":[{"count":1,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/28780\/revisions"}],"predecessor-version":[{"id":28785,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/28780\/revisions\/28785"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=28780"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=28780"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=28780"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}