Bao nhi\u00eau th\u1ebf k\u1ef7 nay ng\u01b0\u1eddi ta \u0111\u00e3 quen d\u00f9ng m\u1eaft th\u01b0\u1eddng ho\u1eb7c th\u00f4ng qua k\u00ednh vi\u1ec5n v\u1ecdng \u0111\u1ec3 quan s\u00e1t c\u00e1c sao.<\/p>\n\n\n\n
M\u1ed9t c\u00e1ch khoa h\u1ecdc l\u00e0 d\u00f9ng \u00e1nh s\u00e1ng nh\u00ecn th\u1ea5y \u0111\u1ec3 quan s\u00e1t c\u00e1c thi\u00ean th\u1ec3. \u0110\u00f3 l\u00e0 v\u00ec m\u1eaft th\u01b0\u1eddng c\u1ee7a con ng\u01b0\u1eddi ch\u1ec9 c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y \u00e1nh s\u00e1ng trong ph\u1ea1m vi b\u01b0\u1edbc s\u00f3ng th\u1ea5y \u0111\u01b0\u1ee3c, \u0111\u1ed1i v\u1edbi s\u00f3ng \u0111i\u1ec7n t\u1eeb kh\u00e1c ta ch\u1ec9 c\u00f3 th\u1ec3 d\u00f9ng m\u00e1y m\u00f3c \u0111\u1ec3 quan s\u00e1t.<\/p>\n\n\n\n
N\u1ebfu m\u1ed9t thi\u00ean th\u1ec3 nhi\u1ec7t \u0111\u1ed9 th\u1ea5p d\u01b0\u1edbi 4000 \u00b0C th\u00ec \u00e1nh s\u00e1ng n\u00f3 ph\u00e1t ra l\u00e0 m\u00e0u \u0111\u1ecf v\u00e0 t\u1ed1i. \u0110i\u1ec1u \u0111\u00f3 gi\u1ed1ng nh\u01b0 m\u1ed9t thanh th\u00e9p v\u1eeba b\u1eaft \u0111\u1ea7u nung, n\u00f3 kh\u00f4ng ph\u00e1t s\u00e1ng m\u00e0 ch\u1ec9 ph\u00e1t ra nhi\u1ec7t. Nhi\u1ec7t \u0111\u1ed9 t\u0103ng n\u00f3 c\u0169ng \u0111\u1ecf d\u1ea7n, nhi\u1ec7t \u0111\u1ed9 c\u00e0ng t\u0103ng cao n\u00f3 bi\u1ebfn th\u00e0nh m\u00e0u s\u00e1ng tr\u1eafng, trong m\u00e0u tr\u1eafng c\u00f2n c\u00f3 \u00e1nh s\u00e1ng xanh. Khi ngu\u1ed9i tr\u1edf l\u1ea1i n\u00f3 d\u1ea7n d\u1ea7n bi\u1ebfn th\u00e0nh m\u00e0u \u0111\u1ecf, cu\u1ed1i c\u00f9ng m\u1ea5t \u0111i \u0111\u1ed9 s\u00e1ng.<\/p>\n\n\n\n
T\u1ea5t c\u1ea3 nh\u1eefng h\u1eb1ng tinh trong qu\u00e1 tr\u00ecnh ra \u0111\u1eddi ho\u1eb7c \u0111\u1ebfn \u0111\u1ed9 tu\u1ed5i suy l\u00e3o s\u1eafp t\u00e0n c\u0169ng gi\u1ed1ng nh\u01b0 thanh th\u00e9p v\u1eeba \u0111\u01b0\u1ee3c nung n\u00f3ng ho\u1eb7c trong qu\u00e1 tr\u00ecnh ngu\u1ed9i \u0111i, \u00e1nh s\u00e1ng m\u00e0u \u0111\u1ecf \u1ea3m \u0111\u1ea1m m\u00e0 n\u00f3 ph\u00e1t ra l\u00e0 tia h\u1ed3ng ngo\u1ea1i. Nh\u1eefng thi\u00ean th\u1ec3 \u0111\u00f3 n\u1eb1m t\u1eeb v\u1eebng s\u00e2u trong v\u0169 tr\u1ee5 h\u1ea7u nh\u01b0 kh\u00f4ng ph\u00e1t ra \u00e1nh s\u00e1ng, nh\u1eefng ng\u00f4i sao nh\u01b0 th\u1ebf g\u1ecdi l\u00e0 sao h\u1ed3ng ngo\u1ea1i.<\/p>\n\n\n\n
C\u00f2n c\u00f3 m\u1ed9t s\u1ed1 ng\u00f4i sao b\u1ecb l\u1edbp b\u1ee5i v\u00e0 m\u00e2y m\u00f9 d\u00e0y \u0111\u1eb7c gi\u1eefa c\u00e1c ng\u00f4i sao bao b\u1ecdc khi\u1ebfn cho ng\u00f4i sao v\u1ed1n v\u1eeba n\u00f3ng, v\u1eeba s\u00e1ng b\u1ecb che l\u1ea5p th\u00e0nh v\u1eeba \u0111\u1ecf, v\u1eeba t\u1ed1i. C\u00f3 nh\u1eefng l\u1edbp b\u1ee5i th\u1eadm ch\u00ed ho\u00e0n to\u00e0n che l\u1ea5p \u00e1nh s\u00e1ng v\u00e0 h\u1ea5p thu h\u1ebft nhi\u1ec7t l\u01b0\u1ee3ng c\u1ee7a ng\u00f4i sao b\u1ecb n\u00f3 bao b\u1ecdc, b\u1ea3n th\u00e2n l\u1edbp b\u1ee5i \u0111\u00f3 ph\u00e1t ra tia s\u00e1ng h\u1ed3ng ngo\u1ea1i. Nh\u1eefng ng\u00f4i sao b\u1ecb bao b\u1ecdc b\u1edfi l\u1edbp b\u1ee5i nh\u01b0 th\u1ebf c\u0169ng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 sao H\u1ed3ng ngo\u1ea1i.<\/p>\n\n\n\n
\u0110\u00e1ng ti\u1ebfc Tr\u00e1i \u0110\u1ea5t ch\u00fang ta c\u0169ng b\u1ecb m\u1ed9t t\u1ea7ng kh\u00ed quy\u1ec3n bao b\u1ecdc, n\u00f3 c\u1ea3n tr\u1edf c\u00e1c nh\u00e0 thi\u00ean v\u0103n ti\u1ebfn h\u00e0nh nghi\u00ean c\u1ee9u c\u00e1c thi\u00ean th\u1ec3. T\u1ea7ng kh\u00ed quy\u1ec3n h\u1ea5p thu m\u1ed9t l\u01b0\u1ee3ng l\u1edbn tia h\u1ed3ng ngo\u1ea1i. \u0110\u1ec3 quan s\u00e1t nh\u1eefng ng\u00f4i sao h\u1ed3ng ngo\u1ea1i n\u00e0y ng\u01b0\u1eddi ta \u0111\u00e0nh ph\u1ea3i \u0111\u01b0a thi\u1ebft b\u1ecb l\u00ean m\u00e1y bay, khinh kh\u00ed c\u1ea7u, t\u00ean l\u1eeda ho\u1eb7c v\u1ec7 tinh nh\u00e2n t\u1ea1o ra ngo\u00e0i t\u1ea7ng kh\u00ed quy\u1ec3n \u0111\u1ec3 quan s\u00e1t.<\/p>\n\n\n\n
T\u1eeb kho\u00e1: Sao h\u1ed3ng ngo\u1ea1i.<\/p>\n\n\n\n
<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"
Bao nhi\u00eau th\u1ebf k\u1ef7 nay ng\u01b0\u1eddi ta \u0111\u00e3 quen d\u00f9ng m\u1eaft th\u01b0\u1eddng ho\u1eb7c th\u00f4ng qua k\u00ednh vi\u1ec5n v\u1ecdng \u0111\u1ec3 quan s\u00e1t c\u00e1c sao. M\u1ed9t c\u00e1ch khoa h\u1ecdc l\u00e0 d\u00f9ng \u00e1nh s\u00e1ng nh\u00ecn th\u1ea5y \u0111\u1ec3 quan s\u00e1t c\u00e1c thi\u00ean th\u1ec3. \u0110\u00f3 l\u00e0 v\u00ec m\u1eaft th\u01b0\u1eddng c\u1ee7a con ng\u01b0\u1eddi ch\u1ec9 c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y \u00e1nh s\u00e1ng trong […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[15,7],"tags":[],"class_list":["post-7243","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-vat-ly"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/7243","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=7243"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/7243\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=7243"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=7243"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=7243"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}