{"id":11057,"date":"2021-11-22T17:39:34","date_gmt":"2021-11-22T10:39:34","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=11057"},"modified":"2021-11-23T21:13:18","modified_gmt":"2021-11-23T14:13:18","slug":"lam-the-nao-de-do-khoang-cach-giua-chung-ta-den-cac-vi-sao","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/lam-the-nao-de-do-khoang-cach-giua-chung-ta-den-cac-vi-sao\/","title":{"rendered":"L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 \u0111o kho\u1ea3ng c\u00e1ch gi\u1eefa ch\u00fang ta \u0111\u1ebfn c\u00e1c v\u00ec sao?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">C\u00f3 r\u1ea5t nhi\u1ec1u c\u00e1ch \u0111o kho\u1ea3ng c\u00e1ch \u0111\u1ebfn c\u00e1c v\u00ec sao, \u1edf \u0111\u00e2y ch\u1ec9 gi\u1edbi thi\u1ec7u m\u1ed9t c\u00e1ch \u0111o t\u01b0\u01a1ng \u0111\u1ed1i \u0111\u01a1n gi\u1ea3n. V\u00ec c\u00e1c v\u00ec sao \u1edf c\u00e1ch ch\u00fang ta r\u1ea5t xa cho n\u00ean c\u1ea9n ph\u1ea3i ti\u1ebfn h\u00e0nh \u0111o t\u1ec9 m\u1ec9, ch\u00ednh x\u00e1c. C\u1ed1 nhi\u00ean c\u00e1c v\u00ec sao c\u00f3 c\u00e1i s\u00e1ng h\u01a1n, c\u00f3 c\u00e1i t\u1ed1i h\u01a1n. N\u00f3i chung, nh\u1eefng c\u00e1i tr\u00f4ng th\u1ea5y m\u1edd m\u1edd \u1ea3o \u1ea3o th\u00ec \u1edf c\u00e1ch ch\u00fang ta r\u1ea5t xa. Ng\u01b0\u1ee3c l\u1ea1i, sao Ng\u01b0u Lang v\u00e0 sao Ch\u1ee9c N\u1eef c\u00f3 \u0111\u1ed9 s\u00e1ng c\u1ea5p 1 th\u00ec t\u01b0\u01a1ng \u0111\u1ed1i g\u1ea9n ch\u00fang ta. V\u00ec v\u1eady, c\u00f3 th\u1ec3 \u0111o \u0111\u01b0\u1ee3c v\u1ecb tr\u00ed c\u1ee7a c\u00e1c sao v\u1ea5y m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c. Khi \u0111o, ch\u00fang ta c\u1ea9n ph\u1ea3i l\u1ea5y c\u00e1c s\u1ed1 \u0111o c\u00e1c v\u00ec sao m\u1edd y\u1ebfu \u1edf g\u1ea9n c\u00e1c ng\u00f4i sao \u0111\u01b0\u1ee3c \u0111o (ph\u1ea9n l\u1edbn l\u00e0 c\u00e1c v\u00ec sao \u1edf xa h\u01a1n) l\u00e0m n\u1ec1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u00e1i \u0111\u1ea5t quay xung quanh M\u1eb7t tr\u1eddi h\u1ebft 1 n\u0103m, t\u1ea1o th\u00e0nh m\u1ed9t \u0111\u01b0\u1eddng tr\u00f2n c\u00f3 \u0111\u01b0\u1eddng k\u00ednh b\u1eb1ng 300 tri\u1ec7u km. Th\u1ebf l\u00e0, tuy nh\u1eefng ng\u00f4i sao xa m\u1edd y\u1ebfu ph\u00eda sau kh\u00f4ng bi\u1ebfn \u0111\u1ed9ng nh\u01b0ng \u0111em \u0111\u1ed1i chi\u1ebfu nh\u1eefng ng\u00f4i sao t\u01b0\u01a1ng \u0111\u1ed1i g\u1ea9n v\u1edbi nh\u1eefng ng\u00f4i sao \u1edf ph\u00eda sau, tuy bi\u1ebfn \u0111\u1ed9ng r\u1ea5t nh\u1ecf, song v\u1eabn d\u1ecbch sang tr\u00e1i ho\u1eb7c d\u1ecbch sang ph\u1ea3i theo chu k\u1ef3 1 n\u0103m. N\u1ebfu d\u00f9ng \u0111\u01a1n v\u1ecb \u0111o g\u00f3c \u0111\u1ec3 bi\u1ec3u th\u1ecb th\u00ec sao Ng\u01b0u Lang c\u00e1ch xa 8,6 n\u0103m \u00e1nh s\u00e1ng ch\u1ec9 l\u1ec7ch \u0111i c\u00f3 0,7 gi\u00e2y.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00f3m l\u1ea1i, c\u00f3 th\u1ec3 \u0111o \u0111\u01b0\u1ee3c c\u00e1c sao c\u00e1ch ta v\u00e0i tr\u0103m n\u0103m \u00e1nh s\u00e1ng. C\u00e1c sao \u1edf xa h\u01a1n th\u00ec c\u00f3 th\u1ec3 d\u1ef1a v\u00e0o ph\u01b0\u01a1ng ph\u00e1p th\u1ed1ng k\u00ea m\u00e0u s\u1eafc \u00e1nh s\u00e1ng\u2026 c\u1ee7a c\u00e1c sao g\u1ea9n \u0111\u00e3 \u0111o \u0111\u01b0\u1ee3c m\u00e0 t\u00ednh ra. Nguy\u00ean l\u00fd c\u1ee7a n\u00f3 l\u00e0: gi\u1ea3 \u0111\u1ecbnh c\u00e1c sao c\u00f3 m\u00e0u nh\u01b0 nhau th\u00ec v\u1ec1 \u0111\u1ea1i th\u1ec3, \u0111\u1ed9 s\u00e1ng c\u1ee7a ch\u00fang kh\u00e1c nhau, kho\u1ea3ng c\u00e1ch t\u0103ng g\u1ea5p \u0111\u00f4i, \u0111\u1ed9 s\u00e1ng ch\u1ec9 c\u00f2n ^.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>C\u00f3 r\u1ea5t nhi\u1ec1u c\u00e1ch \u0111o kho\u1ea3ng c\u00e1ch \u0111\u1ebfn c\u00e1c v\u00ec sao, \u1edf \u0111\u00e2y ch\u1ec9 gi\u1edbi thi\u1ec7u m\u1ed9t c\u00e1ch \u0111o t\u01b0\u01a1ng \u0111\u1ed1i \u0111\u01a1n gi\u1ea3n. V\u00ec c\u00e1c v\u00ec sao \u1edf c\u00e1ch ch\u00fang ta r\u1ea5t xa cho n\u00ean c\u1ea9n ph\u1ea3i ti\u1ebfn h\u00e0nh \u0111o t\u1ec9 m\u1ec9, ch\u00ednh x\u00e1c. C\u1ed1 nhi\u00ean c\u00e1c v\u00ec sao c\u00f3 c\u00e1i s\u00e1ng h\u01a1n, c\u00f3 c\u00e1i [&hellip;]<\/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":[1,15],"tags":[],"class_list":["post-11057","post","type-post","status-publish","format-standard","hentry","category-general","category-hoi-dap-khoa-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/11057","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=11057"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/11057\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=11057"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=11057"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=11057"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}