T\u1eeb kh\u00f3a t\u00ecm ki\u1ebfm: H\u00e3y Tr\u1ea3 L\u1eddi Em T\u1ea1i Sao? \u2013 T\u1eadp 2 – Arkady Leokum \u0111\u00e2y l\u00e0 c\u00e2u h\u1ecfi m\u00e0 h\u1ea7u nh\u01b0 ch\u00fang ta s\u1ebd kh\u00f4ng bao gi\u1edd c\u00f3 c\u00e2u tr\u1ea3 l\u1eddi ch\u00ednh x\u00e1c. Ngay t\u1eeb th\u1eddi xa x\u01b0a, con ng\u01b0\u1eddi \u0111\u00e3 mu\u1ed1n bi\u1ebft \u201ctu\u1ed5i\u201d c\u1ee7a tr\u00e1i \u0111\u1ea5t r\u1ed3i. V\u00e0 \u0111\u00e3 c\u00f3 v\u00f4 s\u1ed1 huy\u1ec1n tho\u1ea1i nh\u1eb1m tr\u1ea3 l\u1eddi cho c\u00e2u h\u1ecfi v\u1ec1 \u201ctu\u1ed5i\u201d c\u1ee7a tr\u00e1i \u0111\u1ea5t. Nh\u01b0ng ngh\u0129 \u0111\u1ebfn v\u1ea5n \u0111\u1ec1 n\u00e0y m\u1ed9t c\u00e1ch khoa h\u1ecdc th\u00ec m\u1edbi ch\u1ec9 c\u00e1ch nay c\u00f3 400 n\u0103m th\u00f4i.<\/p>\n\n\n\n
\u1ede th\u1eddi \u0111i\u1ec3m \u0111\u00f3 – c\u00e1ch nay 400 n\u0103m – ng\u01b0\u1eddi ta m\u1edbi ch\u1ee9ng minh \u0111\u01b0\u1ee3c l\u00e0 tr\u00e1i \u0111\u1ea5t quay quanh m\u1eb7t tr\u1eddi v\u00e0 l\u00e0 th\u00e0nh ph\u1ea7n c\u1ee7a h\u1ec7 m\u1eb7t tr\u1eddi. Ch\u1ec9 khi \u1ea5y c\u00e1c nh\u00e0 khoa h\u1ecdc m\u1edbi bi\u1ebft \u0111\u01b0\u1ee3c ph\u1ea3i b\u1eaft \u0111\u1ea7u t\u1eeb ch\u1ed7 n\u00e0o. Ngh\u0129a l\u00e0 mu\u1ed1n bi\u1ebft \u201ctu\u1ed5i\u201d c\u1ee7a tr\u00e1i \u0111\u1ea5t th\u00ec ph\u1ea3i gi\u1ea3i th\u00edch \u0111\u01b0\u1ee3c h\u1ec7 m\u1eb7t tr\u1eddi \u0111\u00e3 h\u00ecnh th\u00e0nh nh\u01b0 th\u1ebf n\u00e0o.<\/p>\n\n\n\n
C\u00f3 gi\u1ea3 thuy\u1ebft cho r\u1eb1ng kh\u1edfi \u0111\u1ea7u l\u00e0 m\u1ed9t kh\u1ed1i tinh v\u00e2n t\u1ee9c l\u00e0 m\u1ed9t kh\u1ed1i h\u01a1i n\u00f3ng kh\u1ed5ng l\u1ed3 xoay quanh tr\u1ee5c c\u1ee7a ch\u00ednh n\u00f3 v\u1edbi v\u1eadn t\u1ed1c c\u00e0ng l\u00fac c\u00e0ng cao. H\u1ec7 qu\u1ea3 c\u1ee7a s\u1ef1 ki\u1ec7n n\u00e0y l\u00e0: m\u1ed9t, th\u1ec3 t\u00edch c\u1ee7a kh\u1ed1i tinh v\u00e2n c\u00e0ng ng\u00e0y c\u00e0ng co l\u1ea1i; hai, nhi\u1ec7t \u0111\u1ed9 c\u00e0ng l\u00fac c\u00e0ng t\u0103ng; ba, t\u1ea1o ra s\u1ee9c ly t\u00e2m c\u00e0ng l\u00fac c\u00e0ng m\u1ea1nh \u1edf ph\u00eda \u201cx\u00edch \u0111\u1ea1o\u201d c\u1ee7a kh\u1ed1i h\u01a1i, t\u1eeb \u0111\u00f3 t\u1ea1o ra nh\u1eefng v\u00e0nh h\u01a1i. C\u00e1c v\u00e0nh h\u01a1i l\u1ea7n l\u1ea7n co l\u1ea1i th\u00e0nh c\u00e1c h\u00e0nh tinh v\u00e0 kh\u1ed1i h\u01a1i \u1edf trung t\u00e2m co l\u1ea1i th\u00e0nh m\u1eb7t tr\u1eddi.<\/p>\n\n\n\n
Gi\u1ea3 thuy\u1ebft kh\u00e1c \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 thuy\u1ebft vi h\u00e0nh tinh. theo thuy\u1ebft n\u00e0y th\u00ec c\u00e1ch nay h\u00e0ng tri\u1ec7u tri\u1ec7u n\u0103m c\u00f3 v\u00f4 s\u1ed1 c\u00e1c vi h\u00e0nh tinh (nh\u1eefng h\u00e0nh tinh t\u00ed hon: planetesimals) k\u1ebft t\u1ee5 th\u00e0nh m\u1ed9t kh\u1ed1i kh\u1ed5ng l\u1ed3 m\u00e0 trung t\u00e2m l\u00e0 m\u1eb7t tr\u1eddi. th\u1ebf r\u1ed3i c\u00f3 m\u1ed9t ng\u00f4i sao \u201clang thang\u201d trong v\u0169 tr\u1ee5 t\u00ecnh c\u1edd x\u1eb9t ngang, h\u00fat theo m\u1ed9t s\u1ed1 m\u1ea3nh c\u1ee7a kh\u1ed1i h\u00e0nh tinh kia. Nh\u1eefng vi h\u00e0nh tinh b\u1ecb cu\u1ed1n theo k\u1ebft t\u1ee5 l\u1ea1i v\u1edbi nhau – nh\u01b0 ki\u1ec3u n\u1eafm tuy\u1ebft l\u0103n c\u00e0ng l\u00fac c\u00e0ng l\u1edbn nh\u1edd cu\u1ed1n theo tuy\u1ebft tr\u00ean \u0111\u01b0\u1eddng – v\u00e0 th\u00e0nh c\u00e1c h\u00e0nh tinh. S\u1ed1 c\u00f2n l\u1ea1i kh\u00f4ng b\u1ecb cu\u1ed1n theo tr\u1edf th\u00e0nh c\u00e1c h\u00e0nh tinh th\u00ec ch\u00ednh l\u00e0 c\u00e1c thi\u00ean th\u1ec3.<\/p>\n\n\n\n
D\u00f9 gi\u1ea3 thuy\u1ebft n\u00e0o \u0111\u00fang \u0111i ch\u0103ng n\u1eefa, c\u00e1c nh\u00e0 thi\u00ean v\u0103n c\u0169ng v\u1eabn cho r\u1eb1ng s\u1ef1 ki\u1ec7n theo nh\u01b0 c\u00e1c gi\u1ea3 thuy\u1ebft tr\u00ean \u0111\u00e3 x\u1ea3y ra c\u00e1ch nay c\u0169ng 5,5 t\u1ec9 n\u0103m. Nh\u01b0ng nh\u1eefng nh\u00e0 khoa h\u1ecdc kh\u00f4ng thu\u1ed9c ng\u00e0nh thi\u00ean v\u0103n h\u1ecdc \u0111\u00e3 kh\u00f4ng \u0111\u1ed3ng \u00fd v\u1edbi v\u1ea5n \u0111\u1ec1 n\u00e0y. H\u1ecd c\u1ed1 g\u1eafng t\u00ecm l\u1eddi gi\u1ea3i \u0111\u00e1p kh\u00e1c b\u1eb1ng c\u00e1ch nghi\u00ean c\u1ee9u xem ph\u1ea3i m\u1ea5t bao nhi\u00eau th\u1eddi gian tr\u00e1i \u0111\u1ea5t m\u1edbi c\u00f3 h\u00ecnh d\u1ea1ng nh\u01b0 hi\u1ec7n nay, ph\u1ea3i m\u1ea5t bao nhi\u00eau n\u0103m c\u00e1c ng\u1ecdn n\u00fai \u201cgi\u00e0\u201d \u0111i v\u00ec b\u1ecb b\u00e0o m\u00f2n, m\u1ea5t bao nhi\u00eau n\u0103m bi\u1ec3n m\u1edbi \u0111\u1ea1t \u0111\u1ebfn \u0111\u1ed9 m\u1eb7n nh\u01b0 hi\u1ec7n nay?<\/p>\n\n\n\n
Nh\u01b0ng sau nh\u1eefng nghi\u00ean c\u1ee9u t\u1ec9 m\u1ec9 nh\u01b0 v\u1eady, c\u00e1c nh\u00e0 khoa h\u1ecdc c\u0169ng \u0111i \u0111\u1ebfn k\u1ebft lu\u1eadn gi\u1ed1ng nh\u01b0 c\u00e1c nh\u00e0 thi\u00ean v\u0103n: tu\u1ed5i c\u1ee7a tr\u00e1i \u0111\u1ea5t l\u00e0 5,5 t\u1ec9 n\u0103m!<\/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 2 – Arkady Leokum \u0111\u00e2y l\u00e0 c\u00e2u h\u1ecfi m\u00e0 h\u1ea7u nh\u01b0 ch\u00fang ta s\u1ebd kh\u00f4ng bao gi\u1edd c\u00f3 c\u00e2u tr\u1ea3 l\u1eddi ch\u00ednh x\u00e1c. Ngay t\u1eeb th\u1eddi xa x\u01b0a, con ng\u01b0\u1eddi \u0111\u00e3 mu\u1ed1n bi\u1ebft \u201ctu\u1ed5i\u201d c\u1ee7a tr\u00e1i \u0111\u1ea5t r\u1ed3i. V\u00e0 \u0111\u00e3 c\u00f3 v\u00f4 s\u1ed1 […]<\/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-13716","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\/13716","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=13716"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/13716\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=13716"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=13716"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=13716"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}