Th\u1ed5 tinh c\u00f3 m\u1ed9t qu\u1ea7ng s\u00e1ng r\u1ea5t \u0111\u1eb9p, khi\u1ebfn cho m\u1ecdi ng\u01b0\u1eddi ch\u00fa \u00fd \u0111\u1ebfn n\u00f3 trong h\u1ec7 M\u1eb7t Tr\u1eddi. Th\u00e0nh ph\u1ea7n b\u1ea7u kh\u00ed quy\u1ec3n c\u1ee7a th\u1ed5 tinh r\u1ea5t ph\u1ee9c t\u1ea1p, t\u1ed1c \u0111\u1ed9 gi\u00f3 g\u1ea7n \u0111\u01b0\u1eddng x\u00edch \u0111\u1ea1o v\u01b0\u1ee3t qu\u00e1 500 m\/s. Th\u1ed5 tinh c\u00f3 h\u01a1n 20 v\u1ec7 tinh thi\u00ean nhi\u00ean, trong \u0111\u00f3 con ng\u01b0\u1eddi h\u1ee9ng th\u00fa nh\u1ea5t l\u00e0 v\u1ec7 tinh th\u1ee9 s\u00e1u, n\u00f3 l\u00e0 v\u1ec7 tinh l\u1edbn nh\u1ea5t c\u1ee7a Th\u1ed5 tinh, c\u00f2n c\u00f3 t\u00ean g\u1ecdi l\u00e0 “Hecquyn” (th\u1ea7n l\u1ef1c s\u0129 trong truy\u1ec7n th\u1ea7n tho\u1ea1i Hy L\u1ea1p).<\/p>\n\n\n\n
S\u1edf d\u0129 “Hecquyn” g\u00e2y cho con ng\u01b0\u1eddi ch\u00fa \u00fd kh\u00f4ng nh\u1eefng v\u00ec n\u00f3 l\u1edbn m\u00e0 quan tr\u1ecdng h\u01a1n n\u00f3 l\u00e0 m\u1ed9t thi\u00ean th\u1ec3 c\u00f3 t\u1ea7ng kh\u00ed quy\u1ec3n nit\u01a1 d\u00e0y \u0111\u1eb7c duy nh\u1ea5t ngo\u00e0i Tr\u00e1i \u0110\u1ea5t trong h\u1ec7 M\u1eb7t Tr\u1eddi. C\u00e1c nh\u00e0 khoa h\u1ecdc d\u1ef1 \u0111o\u00e1n r\u1eb1ng: tr\u00ean “Hecquyn” c\u00f3 bi\u1ec3n, trong bi\u1ec3n c\u00f3 c\u00e1c ch\u1ea5t h\u1eefu c\u01a1, n\u00f3 r\u1ea5t gi\u1ed1ng v\u1edbi Tr\u00e1i \u0110\u1ea5t \u1edf th\u1eddi k\u1ef3 nguy\u00ean thu\u1ef7. N\u1ebfu th\u0103m d\u00f2 \u0111\u01b0\u1ee3c tr\u00ean “Hecquyn” t\u1ed3n t\u1ea1i nh\u1eefng ch\u1ea5t h\u1eefu c\u01a1 \u0111\u1ec3 h\u1ee3p th\u00e0nh c\u00e1c ph\u00e2n t\u1eed th\u00ec c\u00f3 th\u1ec3 suy \u0111o\u00e1n qu\u00e1 tr\u00ecnh ra \u0111\u1eddi c\u1ee7a s\u1ef1 s\u1ed1ng tr\u00ean Tr\u00e1i \u0110\u1ea5t.<\/p>\n\n\n\n
S\u1ee9 m\u1ec7nh con ng\u01b0\u1eddi th\u0103m d\u00f2 Th\u1ed5 tinh \u0111\u00e3 giao cho thi\u1ebft b\u1ecb Th\u1ed5 tinh “Cassini”. Ng\u00e0y 15 th\u00e1ng 10 n\u0103m 1977 M\u1ef9 \u0111\u00e3 ph\u00f3ng th\u00e0nh c\u00f4ng thi\u1ebft b\u1ecb th\u0103m d\u00f2 h\u00e0nh tinh c\u1ee1 l\u1edbn Cassini, \u0111\u00f3 l\u00e0 m\u1ed9t trong nh\u1eefng k\u1ebf ho\u1ea1ch v\u0169 tr\u1ee5 t\u1ed1n k\u00e9m nh\u1ea5t c\u1ee7a con ng\u01b0\u1eddi trong th\u1ebf k\u1ef7 XX.<\/p>\n\n\n\n
V\u00ec Th\u1ed5 tinh c\u00e1ch Tr\u00e1i \u0110\u1ea5t r\u1ea5t xa t\u1eeb 8,2 – 10,2 \u0111\u01a1n v\u1ecb thi\u00ean v\u0103n (m\u1ed9t \u0111\u01a1n v\u1ecb thi\u00ean v\u0103n kho\u1ea3ng 150 tri\u1ec7u km). Cho n\u00ean m\u1eb7c d\u00f9 h\u1ed3i \u0111\u00f3 \u0111\u00e3 d\u00f9ng t\u00ean l\u1eeda c\u00f3 s\u1ee9c \u0111\u1ea9y m\u1ea1nh nh\u1ea5t, c\u0169ng kh\u00f4ng \u0111\u1ee7 t\u1ed1c \u0111\u1ed9 \u0111\u1ec3 ph\u00f3ng th\u1eb3ng v\u1ec7 tinh “Cassini” n\u1eb7ng 6,4 t\u1ea5n bay th\u1eb3ng \u0111\u1ebfn Th\u1ed5 tinh. Do \u0111\u00f3 c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 kh\u00f4n kh\u00e9o thi\u1ebft k\u1ebf<\/a> “Cassini” nh\u1edd v\u00e0o s\u1ee9c \u0111\u1ea9y gi\u1eefa Kim Tinh, Tr\u00e1i \u0110\u1ea5t v\u00e0 M\u1ed9c tinh \u0111\u1ec3 ti\u1ebfp s\u1ee9c t\u0103ng t\u1ed1c tr\u00ean h\u00e0nh tr\u00ecnh bay \u0111\u1ebfn Th\u1ed5 tinh. Nh\u01b0 v\u1eady h\u00e0nh tr\u00ecnh c\u1ee7a Cassini s\u1ebd t\u0103ng l\u00ean \u0111\u1ebfn 3,2 t\u1ec9 km k\u00e9o d\u00e0i trong 7 n\u0103m. Th\u00e1ng 4 n\u0103m 1998 Cassini bay qua Kim Tinh, d\u01b0\u1edbi t\u00e1c d\u1ee5ng s\u1ee9c h\u00fat c\u1ee7a Kim Tinh n\u00f3 t\u0103ng t\u1ed1c v\u00e0 thay \u0111\u1ed5i ph\u01b0\u01a1ng h\u01b0\u1edbng; th\u00e1ng 6 n\u0103m 1999 n\u00f3 l\u1ea1i l\u1ea7n n\u1eefa bay qua Kim Tinh, l\u1ee3i d\u1ee5ng s\u1ee9c h\u00fat c\u1ee7a Kim Tinh ti\u1ebfp t\u1ee5c t\u0103ng t\u1ed1c bay v\u1ec1 Tr\u00e1i \u0110\u1ea5t; th\u00e1ng 8 n\u0103m 1999 Cassini l\u01b0\u1edbt qua Tr\u00e1i \u0110\u1ea5t, m\u01b0\u1ee3n s\u1ee9c h\u00fat c\u1ee7a Tr\u00e1i \u0110\u1ea5t t\u0103ng t\u1ed1c v\u1ec1 h\u01b0\u1edbng M\u1ed9c tinh; th\u00e1ng gi\u00eang n\u0103m 2001 Cassini t\u1eeb M\u1ed9c tinh t\u0103ng t\u1ed1c l\u1ea7n cu\u1ed1i c\u00f9ng bay \u0111\u1ebfn Th\u1ed5 tinh.<\/p>\n\n\n\n Hai l\u1ea7n m\u01b0\u1ee3n Kim Tinh, m\u1ed9t l\u1ea7n nh\u1edd Tr\u00e1i \u0110\u1ea5t, m\u1ed9t l\u1ea7n nh\u1edd l\u1ef1c M\u1ed9c tinh, qu\u1ef9 \u0111\u1ea1o bay c\u1ee7a n\u00f3 \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 “chuy\u1ebfn bay VVEJ”. V,V,E,J t\u1ee9c l\u00e0 vi\u1ebft t\u1eaft ti\u1ebfng Anh t\u00ean c\u1ee7a Kim Tinh, Tr\u00e1i \u0110\u1ea5t, M\u1ed9c tinh.<\/p>\n\n\n\n H\u00e0nh tr\u00ecnh VVEJ c\u00f3 th\u1ec3 khi\u1ebfn cho Cassini bay \u0111\u1ebfn Th\u1ed5 tinh ti\u1ebft ki\u1ec7m \u0111\u01b0\u1ee3c 77 t\u1ea5n nhi\u00ean li\u1ec7u, t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi 10 l\u1ea7n t\u1ed5ng kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a Cassini.<\/p>\n\n\n\n Cassini ng\u00e0y 1 th\u00e1ng 7 n\u0103m 2004 m\u1edbi \u0111\u1ebfn \u0111\u01b0\u1ee3c Th\u1ed5 tinh. Con t\u00e0u Cassini c\u00f3 hai b\u1ed9 ph\u1eadn c\u1ea5u t\u1ea1o th\u00e0nh: b\u1ed9 ph\u1eadn qu\u1ef9 \u0111\u1ea1o mang 12 m\u00e1y th\u00ed nghi\u1ec7m khoa h\u1ecdc v\u00e0 b\u1ed9 ph\u1eadn Huikene mang s\u00e1u m\u00e1y nghi\u00ean c\u1ee9u khoa h\u1ecdc. B\u1ed9 ph\u1eadn qu\u1ef9 \u0111\u1ea1o bay quanh Th\u1ed5 tinh ti\u1ebfn h\u00e0nh nghi\u00ean c\u1ee9u khoa h\u1ecdc to\u00e0n di\u1ec7n trong b\u1ed1n n\u0103m, c\u00f2n b\u1ed9 ph\u1eadn Huygens ng\u00e0y 25 th\u00e1ng 12 n\u0103m 2004 t\u00e1ch kh\u1ecfi Cassini v\u00e0 h\u01b0\u1edbng t\u1edbi v\u1ec7 tinh Titan, h\u1ea1 c\u00e1nh xu\u1ed1ng Titan ng\u00e0y 14 th\u00e1ng 1 n\u0103m 2005. N\u00f3 gi\u00fap c\u00e1c nh\u00e0 khoa h\u1ecdc gi\u1ea3i \u0111\u00e1p c\u00e2u h\u1ecfi \u0111\u00e3 k\u00e9o d\u00e0i trong nhi\u1ec1u n\u0103m v\u1ec1 “Hecquyn”.<\/p>\n\n\n\n T\u1eeb kho\u00e1: Th\u1ed5 tinh; V\u1ec7 tinh th\u1ee9 6 c\u1ee7a Th\u1ed5 tinh;<\/p>\n\n\n\n <\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":" Th\u1ed5 tinh c\u00f3 m\u1ed9t qu\u1ea7ng s\u00e1ng r\u1ea5t \u0111\u1eb9p, khi\u1ebfn cho m\u1ecdi ng\u01b0\u1eddi ch\u00fa \u00fd \u0111\u1ebfn n\u00f3 trong h\u1ec7 M\u1eb7t Tr\u1eddi. Th\u00e0nh ph\u1ea7n b\u1ea7u kh\u00ed quy\u1ec3n c\u1ee7a th\u1ed5 tinh r\u1ea5t ph\u1ee9c t\u1ea1p, t\u1ed1c \u0111\u1ed9 gi\u00f3 g\u1ea7n \u0111\u01b0\u1eddng x\u00edch \u0111\u1ea1o v\u01b0\u1ee3t qu\u00e1 500 m\/s. Th\u1ed5 tinh c\u00f3 h\u01a1n 20 v\u1ec7 tinh thi\u00ean nhi\u00ean, trong \u0111\u00f3 con ng\u01b0\u1eddi […]<\/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-7371","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\/7371","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=7371"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/7371\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=7371"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=7371"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=7371"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}