T\u1eeb kh\u00f3a t\u00ecm ki\u1ebfm: H\u00e3y Tr\u1ea3 L\u1eddi Em T\u1ea1i Sao? \u2013 T\u1eadp 10 – Arkady Leokum<\/p>\n\n\n\n
Tr\u00e1i \u0111\u1ea5t nh\u01b0 ng\u00e0y nay h\u1ea7u h\u1ebft ch\u00fang ta \u0111\u1ec1u bi\u1ebft c\u00f3 hai lo\u1ea1i chuy\u1ec3n \u0111\u1ed9ng. N\u00f3 quay quanh tr\u1ee5c c\u1ee7a n\u00f3 v\u00e0 quay quanh m\u1eb7t tr\u1eddi theo m\u1ed9t qu\u0129 \u0111\u1ea1o.<\/p>\n\n\n\n
Chuy\u1ec3n \u0111\u1ed9ng th\u1ee9 nh\u1ea5t c\u1ee7a tr\u00e1i \u0111\u1ea5t \u0111\u01b0\u1ee3c con ng\u01b0\u1eddi kh\u00e1m ph\u00e1 l\u00e0 s\u1ef1 quay quanh tr\u1ee5c c\u1ee7a n\u00f3. S\u1ef1 quay n\u00e0y t\u1ea1o n\u00ean s\u1ef1 m\u1ecdc v\u00e0 l\u1eb7n c\u1ee7a m\u1eb7t tr\u1eddi m\u1ed9t c\u00e1ch r\u00f5 r\u00e0ng, c\u1ee7a m\u1eb7t tr\u0103ng v\u00e0 sao c\u0169ng nh\u01b0 s\u1ef1 thay \u0111\u1ed5i ng\u00e0y v\u00e0 \u0111\u00eam. Th\u1eddi gian quay 3600 (m\u1ed9t v\u00f2ng quay \u0111\u1ea7y \u0111\u1ee7 c\u1ee7a tr\u00e1i \u0111\u1ea5t) m\u1ea5t 23 gi\u1edd, 56 ph\u00fat v\u00e0 4,091 gi\u00e2y.<\/p>\n\n\n\n
Ng\u01b0\u1eddi ta tin r\u1eb1ng v\u1eadn t\u1ed1c quay c\u1ee7a tr\u00e1i \u0111\u1ea5t kh\u00f4ng bao gi\u1edd thay \u0111\u1ed5i, hay b\u1ea5t bi\u1ebfn trong kho\u1ea3ng m\u1ed9t ph\u1ea7n ng\u00e0n gi\u00e2y qua bao th\u1ebf k\u1ef7. Nh\u01b0ng c\u0169ng c\u00f3 bi\u1ebfn \u0111\u1ed5i ch\u00fat \u00edt v\u00ec s\u1ef1 ma s\u00e1t c\u1ee7a th\u1ee7y tri\u1ec1u v\u00e0 s\u1ef1 bi\u1ebfn \u0111\u1ed5i trong l\u00f2ng \u0111\u1ea5t, ng\u00e0y c\u1ee7a ch\u00fang ta c\u00f3 th\u1ec3 d\u00e0i ra v\u1edbi v\u1eadn t\u1ed1c kho\u1ea3ng m\u1ed9t ph\u1ea7n ng\u00e0n gi\u00e2y \/ m\u1ed9t th\u1ebf k\u1ef7 (c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111o \u0111\u1ea1c ch\u00fang v\u00e0 r\u1ea5t th\u00edch th\u00fa \u0111\u1ed1i v\u1edbi nh\u1eefng chi ti\u1ebft nh\u1ecf nh\u1eb7t nh\u01b0 th\u1ebf).<\/p>\n\n\n\n
Tr\u00e1i \u0111\u1ea5t c\u0169ng xoay quanh m\u1eb7t tr\u1eddi. T\u1ea1i m\u1ed9t v\u00e0i \u0111i\u1ec3m trong qu\u0129 \u0111\u1ea1o, tr\u00e1i \u0111\u1ea5t \u1edf g\u1ea7n m\u1eb7t tr\u1eddi h\u01a1n nh\u1eefng \u0111i\u1ec3m kh\u00e1c. Khi \u0111i\u1ec3m \u1ea5y g\u1ea7n v\u1edbi m\u1eb7t tr\u1eddi nh\u1ea5t, ta g\u1ecdi l\u00e0 c\u1eadn \u0111i\u1ec3m (perihelion) khi \u0111i\u1ec3m \u1ea5y xa nh\u1ea5t, ta g\u1ecdi l\u00e0 vi\u1ec5n \u0111i\u1ec3m (aphelion). V\u1eadn t\u1ed1c c\u1ee7a tr\u00e1i \u0111\u1ea5t c\u0169ng nh\u01b0 t\u1ea5t c\u1ea3 c\u00e1c h\u00e0nh tinh v\u1eadn h\u00e0nh trong qu\u0129 \u0111\u1ea1o, v\u1eadn t\u1ed1c t\u00f9y thu\u1ed9c v\u00e0o kho\u1ea3ng c\u00e1ch c\u1ee7a ch\u00fang \u0111\u1ebfn m\u1eb7t tr\u1eddi. M\u1ed9t h\u00e0nh tinh duy chuy\u1ec3n nhanh h\u01a1n khi g\u1ea7n m\u1eb7t tr\u1eddi, c\u00e0ng xa c\u00e0ng ch\u1eadm h\u01a1n. Do \u0111\u1ea5y \u1edf c\u1eadn \u0111i\u1ec3m, n\u00f3 di chuy\u1ec3n nhanh nh\u1ea5t v\u00e0 \u1edf vi\u1ec5n \u0111i\u1ec3m, n\u00f3 di chuy\u1ec3n ch\u1eadm nh\u1ea5t. V\u00ec kho\u1ea3ng c\u00e1ch t\u1eeb tr\u00e1i \u0111\u1ea5t \u0111\u1ebfn m\u1eb7t tr\u1eddi kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng c\u1ed1 \u0111\u1ecbnh m\u00e0 v\u1eadn t\u1ed1c c\u1ee7a qu\u0129 \u0111\u1ea1o li\u00ean t\u1ee5c thay \u0111\u1ed5i.<\/p>\n","protected":false},"excerpt":{"rendered":"
T\u1eeb kh\u00f3a t\u00ecm ki\u1ebfm: H\u00e3y Tr\u1ea3 L\u1eddi Em T\u1ea1i Sao? \u2013 T\u1eadp 10 – Arkady Leokum Tr\u00e1i \u0111\u1ea5t nh\u01b0 ng\u00e0y nay h\u1ea7u h\u1ebft ch\u00fang ta \u0111\u1ec1u bi\u1ebft c\u00f3 hai lo\u1ea1i chuy\u1ec3n \u0111\u1ed9ng. N\u00f3 quay quanh tr\u1ee5c c\u1ee7a n\u00f3 v\u00e0 quay quanh m\u1eb7t tr\u1eddi theo m\u1ed9t qu\u0129 \u0111\u1ea1o. Chuy\u1ec3n \u0111\u1ed9ng th\u1ee9 nh\u1ea5t c\u1ee7a tr\u00e1i \u0111\u1ea5t \u0111\u01b0\u1ee3c […]<\/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],"tags":[],"class_list":["post-15902","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/15902","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=15902"}],"version-history":[{"count":1,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/15902\/revisions"}],"predecessor-version":[{"id":15903,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/15902\/revisions\/15903"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=15902"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=15902"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=15902"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}