N\u0103m 1956 m\u1ed9t nh\u00e0 thi\u00ean v\u0103n nghi\u1ec7p d\u01b0 khi quan s\u00e1t c\u00e1c h\u1eb1ng tinh \u0111\u00e3 ph\u00e1t hi\u1ec7n ng\u00f4i sao c\u1ea5p 3 trong ch\u00f2m sao C\u00e1 k\u00ecnh \u0111\u1ed9 s\u00e1ng thay \u0111\u1ed5i d\u1ea7n, t\u1ed1i \u0111\u1ebfn m\u1ee9c m\u1eaft th\u01b0\u1eddng kh\u00f4ng nh\u00ecn th\u1ea5y \u0111\u01b0\u1ee3c. Qua m\u1ed9t n\u0103m sau ng\u00f4i sao n\u00e0y l\u1ea1i xu\u1ea5t hi\u1ec7n tr\u1edf l\u1ea1i. Lo\u1ea1i sao c\u00f3 \u0111\u1ed9 s\u00e1ng bi\u1ebfn \u0111\u1ed5i n\u00e0y g\u1ecdi l\u00e0 bi\u1ebfn tinh sao bi\u1ebfn quang.<\/p>\n\n\n\n
Bi\u1ebfn tinh c\u00f3 3 lo\u1ea1i l\u1edbn. Lo\u1ea1i th\u1ee9 nh\u1ea5t l\u00e0 th\u1ef1c bi\u1ebfn tinh. Tr\u00ean th\u1ef1c t\u1ebf l\u00e0 lo\u1ea1i song tinh quay quanh nhau. Khi ng\u00f4i sao t\u01b0\u01a1ng \u0111\u1ed1i m\u1edd quay \u0111\u1ebfn v\u1ecb tr\u00ed che l\u1ea5p ng\u00f4i sao s\u00e1ng th\u00ec ta s\u1ebd th\u1ea5y ng\u00f4i sao m\u1edd \u0111i; khi hai ng\u00f4i sao kh\u00f4ng che l\u1ea5p nhau th\u00ec s\u1ebd nh\u00ecn th\u1ea5y s\u00e1ng. S\u1ef1 bi\u1ebfn \u0111\u1ed5i \u0111\u1ed9 s\u00e1ng c\u1ee7a lo\u1ea1i sao n\u00e0y l\u00e0 do hai sao thay nhau g\u00e2y n\u00ean, c\u00f2n tr\u1ea1ng th\u00e1i v\u1eadt l\u00fd c\u1ee7a b\u1ea3n th\u00e2n h\u1eb1ng tinh kh\u00f4ng c\u00f3 g\u00ec bi\u1ebfn \u0111\u1ed5i. Lo\u00e0i bi\u1ebfn tinh n\u00e0y c\u0169ng g\u1ecdi l\u00e0 th\u1ef1c song tinh.<\/p>\n\n\n\n
Lo\u1ea1i th\u1ee9 hai g\u1ecdi l\u00e0 bi\u1ebfn tinh m\u1ea1ch \u0111\u1ed9ng. \u0110\u1ed9 s\u00e1ng c\u1ee7a n\u00f3 bi\u1ebfn \u0111\u1ed5i theo chu k\u1ef3. N\u00f3i chung, bi\u1ebfn tinh c\u00f3 chu k\u1ef3 bi\u1ebfn \u0111\u1ed5i d\u00e0i th\u00ec \u0111\u1ed9 s\u00e1ng bi\u1ebfn \u0111\u1ed5i l\u1edbn h\u01a1n, c\u00e1c bi\u1ebfn tinh c\u00f3 chu k\u1ef3 bi\u1ebfn \u0111\u1ed5i ng\u1eafn th\u00ec \u0111\u1ed9 s\u00e1ng bi\u1ebfn \u0111\u1ed5i \u00edt h\u01a1n. V\u00ed d\u1ee5 bi\u1ebfn tinh ch\u00f2m sao C\u00e1 k\u00ecnh c\u00f3 chu k\u1ef3 h\u01a1n 300 ng\u00e0y, \u0111\u1ed9 s\u00e1ng c\u1ee7a n\u00f3 l\u00fac s\u00e1ng nh\u1ea5t v\u00e0 l\u00fac t\u1ed1i nh\u1ea5t ch\u00eanh l\u1ec7ch nhau h\u01a1n 1000 l\u1ea7n. Bi\u1ebfn tinh sao Zaofu c\u0169ng l\u00e0 m\u1ed9t lo\u1ea1i bi\u1ebfn tinh m\u1ea1ch \u0111\u1ed9ng. C\u00e1c nh\u00e0 thi\u00ean v\u0103n th\u01b0\u1eddng d\u00f9ng n\u00f3 \u0111\u1ec3 \u0111o kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c thi\u00ean th\u1ec3.<\/p>\n\n\n\n
Lo\u1ea1i th\u1ee9 ba g\u1ecdi l\u00e0 bi\u1ebfn tinh b\u1ea5t quy t\u1eafc. S\u1ef1 bi\u1ebfn \u0111\u1ed5i \u0111\u1ed9 s\u00e1ng c\u1ee7a ch\u00fang ho\u00e0n to\u00e0n kh\u00f4ng c\u00f3 quy lu\u1eadt, ho\u1eb7c l\u00e0 quy lu\u1eadt kh\u00f4ng x\u00e1c \u0111\u1ecbnh. Sao m\u1edbi v\u00e0 sao si\u00eau m\u1edbi thu\u1ed9c lo\u1ea1i bi\u1ebfn tinh n\u00e0y.<\/p>\n\n\n\n
Ng\u00e0y nay ng\u01b0\u1eddi ta \u0111\u00e3 bi\u1ebft \u0111\u01b0\u1ee3c bi\u1ebfn tinh l\u00e0 m\u1ed9t ti\u00eau ch\u00ed th\u1ec3 hi\u1ec7n h\u1eb1ng tinh \u1edf giai \u0111o\u1ea1n nh\u1ea5t \u0111\u1ecbnh. N\u00f3i chung khi h\u1eb1ng tinh \u1edf giai \u0111o\u1ea1n sao ch\u00ednh th\u00ec t\u01b0\u01a1ng \u0111\u1ed1i \u1ed5n \u0111\u1ecbnh, khi h\u1eb1ng tinh di\u1ec5n bi\u1ebfn \u0111\u1ebfn tr\u01b0\u1edbc ho\u1eb7c sau giai \u0111o\u1ea1n sao ch\u00ednh \u0111\u1ec1u xu\u1ea5t hi\u1ec7n kh\u00f4ng \u1ed5n \u0111\u1ecbnh.<\/p>\n\n\n\n
\u0110\u1ed9 s\u00e1ng c\u1ee7a ch\u00fang s\u1ebd ph\u00e1t sinh bi\u1ebfn \u0111\u1ed5i tr\u1edf th\u00e0nh bi\u1ebfn tinh.<\/p>\n\n\n\n
C\u00f9ng v\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a k\u1ef9 thu\u1eadt quan s\u00e1t, ng\u00e0y c\u00e0ng ph\u00e1t hi\u1ec7n \u0111\u01b0\u1ee3c nhi\u1ec1u h\u1eb1ng tinh \u1edf nh\u1eefng m\u1ee9c \u0111\u1ed9 bi\u1ebfn \u0111\u1ed5i kh\u00e1c nhau. M\u1eb7t Tr\u1eddi l\u00e0 ng\u00f4i sao ch\u00ednh, n\u00f3 t\u01b0\u01a1ng \u0111\u1ed1i \u1ed5n \u0111\u1ecbnh. Nh\u01b0ng tr\u00ean M\u1eb7t Tr\u1eddi v\u1eabn c\u00f3 nh\u1eefng v\u1ebft \u0111en v\u00e0 v\u1ec7t s\u00e1ng lu\u00f4n lu\u00f4n ho\u1ea1t \u0111\u1ed9ng. V\u00ec v\u1eady bi\u1ebfn tinh l\u00e0 ph\u1ed5 bi\u1ebfn, ch\u1eb3ng qua trong ph\u1ea7n l\u1edbn tr\u01b0\u1eddng h\u1ee3p ta r\u1ea5t kh\u00f3 d\u00f9ng m\u1eaft th\u01b0\u1eddng \u0111\u1ec3 ph\u00e1t hi\u1ec7n \u0111\u1ed9 s\u00e1ng c\u1ee7a ch\u00fang bi\u1ec3n \u0111\u1ed5i m\u00e0 th\u00f4i.<\/p>\n\n\n\n
T\u1eeb kho\u00e1: Bi\u1ebfn tinh; Th\u1ef1c bi\u1ebfn tinh; Th\u1ef1c song tinh; Bi\u1ebfn tinh m\u1ea1ch \u0111\u1ed9ng; Bi\u1ebfn tinh b\u1ea5t quy t\u1eafc.<\/p>\n\n\n\n
<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"
N\u0103m 1956 m\u1ed9t nh\u00e0 thi\u00ean v\u0103n nghi\u1ec7p d\u01b0 khi quan s\u00e1t c\u00e1c h\u1eb1ng tinh \u0111\u00e3 ph\u00e1t hi\u1ec7n ng\u00f4i sao c\u1ea5p 3 trong ch\u00f2m sao C\u00e1 k\u00ecnh \u0111\u1ed9 s\u00e1ng thay \u0111\u1ed5i d\u1ea7n, t\u1ed1i \u0111\u1ebfn m\u1ee9c m\u1eaft th\u01b0\u1eddng kh\u00f4ng nh\u00ecn th\u1ea5y \u0111\u01b0\u1ee3c. Qua m\u1ed9t n\u0103m sau ng\u00f4i sao n\u00e0y l\u1ea1i xu\u1ea5t hi\u1ec7n tr\u1edf l\u1ea1i. Lo\u1ea1i sao c\u00f3 […]<\/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-7231","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\/7231","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=7231"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/7231\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=7231"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=7231"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=7231"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}