{"id":7281,"date":"2021-11-20T12:56:24","date_gmt":"2021-11-20T05:56:24","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=7281"},"modified":"2021-11-20T15:09:16","modified_gmt":"2021-11-20T08:09:16","slug":"toc-do-cao-bao-nhieu-moi-thoat-khoi-suc-hut-cua-trai-dat","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/toc-do-cao-bao-nhieu-moi-thoat-khoi-suc-hut-cua-trai-dat\/","title":{"rendered":"T\u1ed1c \u0111\u1ed9 cao bao nhi\u00eau m\u1edbi tho\u00e1t kh\u1ecfi s\u1ee9c h\u00fat c\u1ee7a Tr\u00e1i \u0111\u1ea5t?"},"content":{"rendered":"\n<p>Tr\u00ean m\u1eb7t \u0111\u1ea5t, d\u00f9 ta n\u00e9m l\u00ean tr\u1eddi m\u1ed9t v\u1eadt g\u00ec, ch\u00fang lu\u00f4n r\u01a1i l\u1ea1i m\u1eb7t \u0111\u1ea5t, cho d\u00f9 l\u1ef1c n\u00e9m m\u1ea1nh \u0111\u1ebfn \u0111\u00e2u th\u00ec c\u00e1c v\u1eadt nhi\u1ec1u nh\u1ea5t c\u0169ng ch\u1ec9 \u0111i \u0111\u01b0\u1ee3c m\u1ed9t v\u00f2ng cung, cu\u1ed1i c\u00f9ng l\u1ea1i r\u01a1i xu\u1ed1ng \u0111\u1ea5t. V\u00ed d\u1ee5 b\u1eafn vi\u00ean \u0111\u1ea1n l\u00ean tr\u00ean kh\u00f4ng cu\u1ed1i c\u00f9ng v\u1eabn r\u01a1i xu\u1ed1ng \u0111\u1ea5t.<\/p>\n\n\n\n<p>\u0110\u00f3 l\u00e0 v\u00ec Tr\u00e1i \u0110\u1ea5t c\u00f3 s\u1ee9c h\u00fat \u0111\u1ed1i v\u1edbi m\u1ecdi v\u1eadt. B\u1ea5t c\u1ee9 v\u1eadt n\u00e0o quanh ta \u0111\u1ec1u kh\u00f4ng tr\u00e1nh kh\u1ecfi s\u1ee9c h\u00fat c\u1ee7a Tr\u00e1i \u0110\u1ea5t.<\/p>\n\n\n\n<p>V\u1ec7 tinh nh\u00e2n t\u1ea1o \u0111\u00e3 bay ra kh\u1ecfi Tr\u00e1i \u0110\u1ea5t, tr\u00e1nh \u0111\u01b0\u1ee3c s\u1ee9c h\u00fat c\u1ee7a Tr\u00e1i \u0110\u1ea5t nh\u01b0 th\u1ebf n\u00e0o? \u0110\u00f3 l\u00e0 v\u00ec c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 cho v\u1ec7 tinh m\u1ed9t t\u1ed1c \u0111\u1ed9 c\u1ef1c l\u1edbn. \u0110\u1ec3 tr\u1ea3 l\u1eddi t\u1ed1c \u0111\u1ed9 tho\u00e1t \u0111\u01b0\u1ee3c s\u1ee9c h\u00fat c\u1ee7a Tr\u00e1i \u0110\u1ea5t c\u1ea7n bao nhi\u00eau, tr\u01b0\u1edbc h\u1ebft ta h\u00e3y b\u00e0n v\u1ec1 l\u1ef1c ly t\u00e2m. M\u1ecdi ng\u01b0\u1eddi \u0111\u1ec1u bi\u1ebft: gi\u1eefa Tr\u00e1i \u0110\u1ea5t v\u00e0 M\u1eb7t Tr\u0103ng c\u00f3 l\u1ef1c h\u1ea5p d\u1eabn. V\u1eady v\u00ec sao M\u1eb7t Tr\u0103ng kh\u00f4ng r\u01a1i v\u00e0o Tr\u00e1i \u0110\u1ea5t?<\/p>\n\n\n\n<p>Nguy\u00ean nh\u00e2n l\u00e0 \u1edf ch\u1ed7 khi M\u1eb7t Tr\u0103ng quay quanh Tr\u00e1i \u0110\u1ea5t \u0111\u00e3 s\u1ea3n ra m\u1ed9t l\u1ef1c ly t\u00e2m. L\u1ef1c ly t\u00e2m n\u00e0y \u0111\u1ee7 \u0111\u1ec3 ch\u1ed1ng l\u1ea1i s\u1ee9c h\u00fat c\u1ee7a Tr\u00e1i \u0110\u1ea5t, cho n\u00ean M\u1eb7t Tr\u0103ng v\u1eabn bay l\u01a1 l\u1eedng tr\u00ean kh\u00f4ng trung m\u00e0 kh\u00f4ng r\u01a1i xu\u1ed1ng \u0111\u1ea5t.<\/p>\n\n\n\n<p>V\u00ec v\u1eady mu\u1ed1n ph\u00f3ng v\u1ec7 tinh nh\u00e2n t\u1ea1o bay quanh Tr\u00e1i \u0110\u1ea5t m\u00e0 kh\u00f4ng b\u1ecb r\u01a1i xu\u1ed1ng th\u00ec ph\u1ea3i khi\u1ebfn cho l\u1ef1c ly t\u00e2m c\u1ee7a n\u00f3 c\u00e2n b\u1eb1ng v\u1edbi s\u1ee9c h\u00fat c\u1ee7a Tr\u00e1i \u0110\u1ea5t.<\/p>\n\n\n\n<p>C\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 t\u00ednh to\u00e1n, \u0111\u1ed9 l\u1edbn nh\u1ecf c\u1ee7a l\u1ef1c ly t\u00e2m t\u1ec9 l\u1ec7 thu\u1eadn v\u1edbi b\u00ecnh ph\u01b0\u01a1ng t\u1ed1c \u0111\u1ed9 chuy\u1ec3n \u0111\u1ed9ng tr\u00f2n. C\u0103n c\u1ee9 v\u00e0o \u0111\u00f3 ng\u01b0\u1eddi ta t\u00ednh \u0111\u01b0\u1ee3c mu\u1ed1n cho v\u1eadt th\u1ec3 kh\u00f4ng r\u01a1i v\u00e0o Tr\u00e1i \u0110\u1ea5t ph\u1ea3i c\u00f3 t\u1ed1c \u0111\u1ed9 7,9 km\/s, t\u1ee9c l\u00e0 n\u00f3i n\u1ebfu v\u1eadt th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c t\u1ed1c \u0111\u1ed9 7,9 km\/s th\u00ec n\u00f3 s\u1ebd m\u00e3i m\u00e3i bay quanh Tr\u00e1i \u0110\u1ea5t m\u00e0 kh\u00f4ng r\u01a1i xu\u1ed1ng n\u1eefa. Ta g\u1ecdi \u0111\u00f3 l\u00e0 t\u1ed1c \u0111\u1ed9 v\u0169 tr\u1ee5 c\u1ea5p m\u1ed9t, c\u0169ng t\u1ee9c l\u00e0 t\u1ed1c \u0111\u1ed9 bay v\u00f2ng quanh Tr\u00e1i \u0110\u1ea5t. 7,9 km\/s l\u00e0 t\u1ed1c \u0111\u1ed9 r\u1ea5t l\u1edbn. Nh\u01b0 ta \u0111\u00e3 bi\u1ebft \u00e2m thanh truy\u1ec1n trong kh\u00f4ng kh\u00ed v\u1edbi t\u1ed1c \u0111\u1ed9 334 m\/s; t\u00e0u ho\u1ea3 ti\u1ebfn l\u00ean nhanh nh\u01b0 v\u0169 b\u00e3o nh\u01b0ng m\u1ed7i gi\u00e2y ch\u1ec9 \u0111i \u0111\u01b0\u1ee3c 20 m. Ch\u00ednh v\u00ec t\u1ed1c \u0111\u1ed9 v\u0169 tr\u1ee5 c\u1ea5p m\u1ed9t v\u00f4 c\u00f9ng l\u1edbn, cho n\u00ean tr\u01b0\u1edbc khi ph\u00e1t minh ra t\u00ean l\u1eeda hi\u1ec7n \u0111\u1ea1i con ng\u01b0\u1eddi kh\u00f4ng th\u1ec3 th\u1ef1c hi\u1ec7n \u0111\u01b0\u1ee3c gi\u1ea5c m\u01a1 ph\u00f3ng v\u1ec7 tinh nh\u00e2n t\u1ea1o. _,, &#8211; &#8211;<\/p>\n\n\n\n<p>-T6c d9 vu r111 cdp 3 16, 7 km ls :::::.&#8211; &#8211; &#8211;<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>T6c d(j v,) 11; c c-lp2 -=- I1,2kmls \u2026\u2026\u2026&#8217;.. \u2026\u2026. &#8216;, &#8216; \\ , , \\ \\<\/li><\/ul>\n\n\n\n<p>To e d(j vr, tr{,capl \\<\/p>\n\n\n\n<p>I 7 9 km l s I \/<\/p>\n\n\n\n<p>I &#8216;<\/p>\n\n\n\n<p>I \/ I \u2026, &#8212;<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code> _,,,,,,..,,\/ ,,,,\/  \/  --------.....:.  :::..-------        <\/code><\/pre>\n\n\n\n<p>N\u1ebfu t\u1ed1c \u0111\u1ed9 c\u1ee7a v\u1eadt th\u1ec3 v\u01b0\u1ee3t qu\u00e1 7,9 km\/s th\u00ec s\u1ebd nh\u01b0 th\u1ebf n\u00e0o? Th\u00f4ng qua t\u00ednh to\u00e1n v\u00e0 th\u00ed nghi\u1ec7m con ng\u01b0\u1eddi bi\u1ebft \u0111\u01b0\u1ee3c, qu\u1ef9 \u0111\u1ea1o chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a v\u1eadt th\u1ec3 l\u00fac \u0111\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 h\u00ecnh tr\u00f2n n\u1eefa m\u00e0 l\u00e0 h\u00ecnh elip. T\u1ed1c \u0111\u1ed9 c\u00e0ng l\u1edbn th\u00ec h\u00ecnh Elip c\u00e0ng d\u1eb9t. Khi t\u1ed1c \u0111\u1ed9 \u0111\u1ea1t \u0111\u1ebfn 11,2 km\/s h\u00ecnh elip l\u00fac \u0111\u00f3 s\u1ebd kh\u00f4ng kh\u00e9p k\u00edn n\u1eefa, t\u1ee9c l\u00e0 n\u00f3i v\u1eadt th\u1ec3 s\u1ebd v\u01b0\u1ee3t ra kh\u1ecfi s\u1ef1 r\u00e0ng bu\u1ed9c c\u1ee7a Tr\u00e1i \u0110\u1ea5t m\u00e0 bay v\u00e0o v\u0169 tr\u1ee5 gi\u1eefa c\u00e1c v\u00ec sao. Cho n\u00ean t\u1ed1c \u0111\u1ed9 11,2 km\/s g\u1ecdi l\u00e0 t\u1ed1c \u0111\u1ed9 v\u0169 tr\u1ee5 c\u1ea5p hai, c\u0169ng g\u1ecdi l\u00e0 t\u1ed1c \u0111\u1ed9 tho\u00e1t kh\u1ecfi s\u1ee9c h\u00fat c\u1ee7a Tr\u00e1i \u0110\u1ea5t. Con ng\u01b0\u1eddi mu\u1ed1n bay l\u00ean M\u1eb7t Tr\u0103ng ho\u1eb7c c\u00e1c h\u00e0nh tinh kh\u00e1c th\u00ec ph\u1ea3i \u0111\u1ea1t \u0111\u01b0\u1ee3c t\u1ed1c \u0111\u1ed9 n\u00e0y.<\/p>\n\n\n\n<p>Nh\u01b0ng v\u1eadt th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c t\u1ed1c \u0111\u1ed9 v\u0169 tr\u1ee5 c\u1ea5p hai v\u1eabn ch\u01b0a tho\u00e1t kh\u1ecfi s\u1ef1 kh\u1ed1ng ch\u1ebf c\u1ee7a M\u1eb7t Tr\u1eddi. N\u1ebfu mu\u1ed1n du h\u00e0nh ra kh\u1ecfi h\u1ec7 M\u1eb7t Tr\u1eddi th\u00ec ph\u1ea3i \u0111\u1ea1t \u0111\u01b0\u1ee3c t\u1ed1c \u0111\u1ed9 v\u0169 tr\u1ee5 c\u1ea5p ba l\u00e0 16,7 km\/s. V\u1eady t\u1ed1c \u0111\u1ed9 v\u01b0\u1ee3t kh\u1ecfi h\u1ec7 Ng\u00e2n h\u00e0 l\u00e0 bao nhi\u00eau? C\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 t\u00ednh to\u00e1n trong kho\u1ea3ng 110 &#8211; 120 km\/s, ta g\u1ecdi n\u00f3 l\u00e0 t\u1ed1c \u0111\u1ed9 v\u0169 tr\u1ee5 c\u1ea5p b\u1ed1n. N\u00f3 s\u1ebd l\u00e0 m\u01a1 \u01b0\u1edbc v\u00e0 m\u1ee5c ti\u00eau \u0111\u1ec3 sau n\u00e0y ta du h\u00e0nh trong v\u0169 tr\u1ee5.<\/p>\n\n\n\n<p>T\u1eeb kho\u00e1: L\u1ef1c v\u1ea1n v\u1eadt h\u1ea5p d\u1eabn; L\u1ef1c ly t\u00e2m; T\u1ed1c \u0111\u1ed9 v\u0169 tr\u1ee5 c\u1ea5p m\u1ed9t; T\u1ed1c \u0111\u1ed9 bay quanh Tr\u00e1i \u0110\u1ea5t;<\/p>\n\n\n\n<p><\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"<p>Tr\u00ean m\u1eb7t \u0111\u1ea5t, d\u00f9 ta n\u00e9m l\u00ean tr\u1eddi m\u1ed9t v\u1eadt g\u00ec, ch\u00fang lu\u00f4n r\u01a1i l\u1ea1i m\u1eb7t \u0111\u1ea5t, cho d\u00f9 l\u1ef1c n\u00e9m m\u1ea1nh \u0111\u1ebfn \u0111\u00e2u th\u00ec c\u00e1c v\u1eadt nhi\u1ec1u nh\u1ea5t c\u0169ng ch\u1ec9 \u0111i \u0111\u01b0\u1ee3c m\u1ed9t v\u00f2ng cung, cu\u1ed1i c\u00f9ng l\u1ea1i r\u01a1i xu\u1ed1ng \u0111\u1ea5t. V\u00ed d\u1ee5 b\u1eafn vi\u00ean \u0111\u1ea1n l\u00ean tr\u00ean kh\u00f4ng cu\u1ed1i c\u00f9ng v\u1eabn r\u01a1i xu\u1ed1ng [&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":[15,7],"tags":[],"class_list":["post-7281","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\/7281","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=7281"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/7281\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=7281"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=7281"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=7281"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}