{"id":19599,"date":"2025-07-23T13:03:40","date_gmt":"2025-07-23T06:03:40","guid":{"rendered":"https:\/\/trungvu.net\/?p=19599"},"modified":"2025-07-23T13:06:31","modified_gmt":"2025-07-23T06:06:31","slug":"vu-tru-co-vo-han-khong-mot-cau-hoi-chua-co-loi-ket","status":"publish","type":"post","link":"https:\/\/trungvu.net\/wordpress\/vu-tru-co-vo-han-khong-mot-cau-hoi-chua-co-loi-ket\/","title":{"rendered":"V\u0169 tr\u1ee5 c\u00f3 v\u00f4 h\u1ea1n kh\u00f4ng? M\u1ed9t c\u00e2u h\u1ecfi ch\u01b0a c\u00f3 l\u1eddi k\u1ebft"},"content":{"rendered":"\n<p>C\u00e2u h\u1ecfi \u201cV\u0169 tr\u1ee5 c\u00f3 v\u00f4 h\u1ea1n kh\u00f4ng?\u201d l\u00e0 m\u1ed9t trong nh\u1eefng b\u00ed \u1ea9n l\u1edbn nh\u1ea5t c\u1ee7a khoa h\u1ecdc v\u00e0 tri\u1ebft h\u1ecdc hi\u1ec7n \u0111\u1ea1i. T\u1eeb thu\u1edf s\u01a1 khai, con ng\u01b0\u1eddi \u0111\u00e3 ng\u01b0\u1edbc nh\u00ecn b\u1ea7u tr\u1eddi, t\u1ef1 h\u1ecfi li\u1ec7u kh\u00f4ng gian ngo\u00e0i kia k\u00e9o d\u00e0i \u0111\u1ebfn \u0111\u00e2u. Ng\u00e0y nay, v\u1edbi s\u1ef1 ti\u1ebfn b\u1ed9 c\u1ee7a v\u1eadt l\u00fd h\u1ecdc v\u00e0 thi\u00ean v\u0103n h\u1ecdc, ch\u00fang ta \u0111\u00e3 c\u00f3 m\u1ed9t s\u1ed1 manh m\u1ed1i, nh\u01b0ng c\u00e2u tr\u1ea3 l\u1eddi v\u1eabn ch\u01b0a th\u1ef1c s\u1ef1 r\u00f5 r\u00e0ng.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"512\" height=\"512\" src=\"https:\/\/trungvu.net\/wp-content\/uploads\/2025\/07\/IMG_7944.png\" alt=\"V\u0169 tr\u1ee5 c\u00f3 v\u00f4 h\u1ea1n kh\u00f4ng? M\u1ed9t c\u00e2u h\u1ecfi ch\u01b0a c\u00f3 l\u1eddi k\u1ebft\" class=\"wp-image-19600\" srcset=\"https:\/\/trungvu.net\/wordpress\/wp-content\/uploads\/2025\/07\/IMG_7944.png 512w, https:\/\/trungvu.net\/wordpress\/wp-content\/uploads\/2025\/07\/IMG_7944-300x300.png 300w, https:\/\/trungvu.net\/wordpress\/wp-content\/uploads\/2025\/07\/IMG_7944-105x105.png 105w\" sizes=\"auto, (max-width: 512px) 100vw, 512px\" \/><figcaption class=\"wp-element-caption\"><em>V\u0169 tr\u1ee5 c\u00f3 v\u00f4 h\u1ea1n kh\u00f4ng? M\u1ed9t c\u00e2u h\u1ecfi ch\u01b0a c\u00f3 l\u1eddi k\u1ebft<\/em><\/figcaption><\/figure>\n\n\n\n<p><strong>1.&nbsp;<\/strong><\/p>\n\n\n\n<p><strong>V\u0169 tr\u1ee5 quan s\u00e1t \u0111\u01b0\u1ee3c v\u00e0 v\u0169 tr\u1ee5 to\u00e0n th\u1ec3<\/strong><\/p>\n\n\n\n<p>Tr\u01b0\u1edbc ti\u00ean, c\u1ea7n ph\u00e2n bi\u1ec7t r\u00f5 hai kh\u00e1i ni\u1ec7m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>V\u0169 tr\u1ee5 quan s\u00e1t \u0111\u01b0\u1ee3c (observable universe) l\u00e0 ph\u1ea7n kh\u00f4ng gian m\u00e0 con ng\u01b0\u1eddi c\u00f3 th\u1ec3 quan s\u00e1t \u0111\u01b0\u1ee3c b\u1eb1ng c\u00e1c thi\u1ebft b\u1ecb khoa h\u1ecdc, nh\u1edd \u00e1nh s\u00e1ng v\u00e0 s\u00f3ng v\u00f4 tuy\u1ebfn \u0111\u00e3 k\u1ecbp \u0111\u1ebfn Tr\u00e1i \u0110\u1ea5t t\u1eeb sau V\u1ee5 N\u1ed5 L\u1edbn (Big Bang). B\u00e1n k\u00ednh c\u1ee7a v\u0169 tr\u1ee5 quan s\u00e1t \u0111\u01b0\u1ee3c v\u00e0o kho\u1ea3ng 46.5 t\u1ef7 n\u0103m \u00e1nh s\u00e1ng.<\/li>\n\n\n\n<li>V\u0169 tr\u1ee5 to\u00e0n th\u1ec3 (the whole universe) l\u00e0 to\u00e0n b\u1ed9 kh\u00f4ng gian, k\u1ec3 c\u1ea3 nh\u1eefng ph\u1ea7n m\u00e0 \u00e1nh s\u00e1ng ch\u01b0a k\u1ecbp \u0111\u1ebfn v\u1edbi ch\u00fang ta \u2013 n\u01a1i c\u00f3 th\u1ec3 v\u01b0\u1ee3t ngo\u00e0i kh\u1ea3 n\u0103ng quan s\u00e1t v\u0129nh vi\u1ec5n.<\/li>\n<\/ul>\n\n\n\n<p>Khi ng\u01b0\u1eddi ta h\u1ecfi \u201cv\u0169 tr\u1ee5 c\u00f3 v\u00f4 h\u1ea1n kh\u00f4ng?\u201d, th\u01b0\u1eddng l\u00e0 \u0111ang h\u1ecfi v\u1ec1 v\u0169 tr\u1ee5 to\u00e0n th\u1ec3, kh\u00f4ng ch\u1ec9 ph\u1ea7n m\u00e0 ch\u00fang ta nh\u00ecn th\u1ea5y.<\/p>\n\n\n\n<p><strong>2.&nbsp;<\/strong><\/p>\n\n\n\n<p><strong>L\u00fd thuy\u1ebft v\u1eadt l\u00fd n\u00f3i g\u00ec?<\/strong><\/p>\n\n\n\n<p>C\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u01b0a ra m\u1ed9t s\u1ed1 kh\u1ea3 n\u0103ng:<\/p>\n\n\n\n<p><strong>\u2705&nbsp;<\/strong><\/p>\n\n\n\n<p><strong>V\u0169 tr\u1ee5 c\u00f3 th\u1ec3 l\u00e0 v\u00f4 h\u1ea1n<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Trong m\u00f4 h\u00ecnh kh\u00f4ng gian ph\u1eb3ng (flat) m\u00e0 nhi\u1ec1u quan s\u00e1t (nh\u01b0 b\u1ee9c x\u1ea1 n\u1ec1n vi s\u00f3ng v\u0169 tr\u1ee5) \u0111ang \u1ee7ng h\u1ed9, v\u0169 tr\u1ee5 c\u00f3 th\u1ec3 k\u00e9o d\u00e0i v\u00f4 h\u1ea1n theo m\u1ecdi h\u01b0\u1edbng, kh\u00f4ng c\u00f3 bi\u00ean gi\u1edbi hay r\u00eca.<\/li>\n\n\n\n<li>Kh\u00f4ng gian c\u00f3 th\u1ec3 gi\u1ed1ng nh\u01b0 m\u1ed9t t\u1ea5m v\u1ea3i ph\u1eb3ng kh\u00f4ng bao gi\u1edd k\u1ebft th\u00fac \u2013 kh\u00f4ng c\u00f3 \u201cr\u00eca\u201d, kh\u00f4ng c\u00f3 \u201ccu\u1ed1i\u201d.<\/li>\n<\/ul>\n\n\n\n<p><strong>\u274e&nbsp;<\/strong><\/p>\n\n\n\n<p><strong>Ho\u1eb7c v\u0169 tr\u1ee5 l\u00e0 h\u1eefu h\u1ea1n nh\u01b0ng kh\u00f4ng c\u00f3 r\u00eca<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>V\u0169 tr\u1ee5 c\u00f3 th\u1ec3 gi\u1ed1ng b\u1ec1 m\u1eb7t c\u1ee7a qu\u1ea3 c\u1ea7u \u2013 h\u1eefu h\u1ea1n nh\u01b0ng kh\u00f4ng c\u00f3 bi\u00ean gi\u1edbi. \u0110i m\u00e3i c\u0169ng s\u1ebd quay l\u1ea1i \u0111i\u1ec3m xu\u1ea5t ph\u00e1t, nh\u01b0 \u0111i v\u00f2ng quanh Tr\u00e1i \u0110\u1ea5t.<\/li>\n\n\n\n<li>Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, kh\u00f4ng gian cong v\u1ec1 ch\u00ednh n\u00f3. \u0110\u00e2y l\u00e0 kh\u00e1i ni\u1ec7m kh\u00f4ng d\u1ec5 h\u00ecnh dung trong 3 chi\u1ec1u kh\u00f4ng gian m\u00e0 ch\u00fang ta \u0111ang s\u1ed1ng.<\/li>\n<\/ul>\n\n\n\n<p><strong>3.&nbsp;<\/strong><\/p>\n\n\n\n<p><strong>C\u00e1c gi\u1edbi h\u1ea1n c\u1ee7a quan s\u00e1t<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u00c1nh s\u00e1ng c\u00f3 t\u1ed1c \u0111\u1ed9 h\u1eefu h\u1ea1n, v\u00e0 v\u0169 tr\u1ee5 m\u1edbi ch\u1ec9 kho\u1ea3ng 13.8 t\u1ef7 n\u0103m tu\u1ed5i.<\/li>\n\n\n\n<li>Do kh\u00f4ng gian gi\u00e3n n\u1edf, nhi\u1ec1u v\u00f9ng v\u0169 tr\u1ee5 \u0111ang r\u1eddi xa ch\u00fang ta nhanh h\u01a1n c\u1ea3 t\u1ed1c \u0111\u1ed9 \u00e1nh s\u00e1ng. Ngh\u0129a l\u00e0 c\u00f3 nh\u1eefng v\u00f9ng ch\u00fang ta kh\u00f4ng bao gi\u1edd quan s\u00e1t \u0111\u01b0\u1ee3c, ngay c\u1ea3 trong t\u01b0\u01a1ng lai.<\/li>\n\n\n\n<li>V\u00ec v\u1eady, khoa h\u1ecdc hi\u1ec7n t\u1ea1i kh\u00f4ng th\u1ec3 x\u00e1c nh\u1eadn v\u0169 tr\u1ee5 v\u00f4 h\u1ea1n hay h\u1eefu h\u1ea1n, ch\u1ec9 c\u00f3 th\u1ec3 suy lu\u1eadn gi\u00e1n ti\u1ebfp qua quan s\u00e1t v\u00e0 m\u00f4 h\u00ecnh.<\/li>\n<\/ul>\n\n\n\n<p><strong>4.&nbsp;<\/strong><\/p>\n\n\n\n<p><strong>Tri\u1ebft l\u00fd v\u00e0 t\u01b0\u1edfng t\u01b0\u1ee3ng<\/strong><\/p>\n\n\n\n<p>C\u00e2u h\u1ecfi v\u1ec1 s\u1ef1 v\u00f4 h\u1ea1n kh\u00f4ng ch\u1ec9 l\u00e0 khoa h\u1ecdc m\u00e0 c\u00f2n mang t\u00ednh tri\u1ebft l\u00fd:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>N\u1ebfu v\u0169 tr\u1ee5 v\u00f4 h\u1ea1n, c\u00f3 ngh\u0129a l\u00e0 m\u1ecdi kh\u1ea3 n\u0103ng \u0111\u1ec1u t\u1ed3n t\u1ea1i \u1edf \u0111\u00e2u \u0111\u00f3 \u2013 m\u1ed9t phi\u00ean b\u1ea3n c\u1ee7a b\u1ea1n, c\u1ee7a Tr\u00e1i \u0110\u1ea5t, c\u1ee7a l\u1ecbch s\u1eed, l\u1eb7p l\u1ea1i v\u00f4 h\u1ea1n l\u1ea7n?<\/li>\n\n\n\n<li>N\u1ebfu h\u1eefu h\u1ea1n, th\u00ec c\u00e1i g\u00ec \u1edf ngo\u00e0i bi\u00ean c\u1ee7a v\u0169 tr\u1ee5? V\u00e0 t\u1ea1i sao l\u1ea1i c\u00f3 bi\u00ean?<\/li>\n<\/ul>\n\n\n\n<p>Nh\u1eefng c\u00e2u h\u1ecfi n\u00e0y k\u00edch th\u00edch s\u1ef1 t\u00f2 m\u00f2 v\u00e0 tr\u00ed t\u01b0\u1edfng t\u01b0\u1ee3ng c\u1ee7a nh\u00e2n lo\u1ea1i su\u1ed1t h\u00e0ng ngh\u00ecn n\u0103m.<\/p>\n\n\n\n<p><strong>5.&nbsp;<\/strong><\/p>\n\n\n\n<p><strong>K\u1ebft lu\u1eadn<\/strong><\/p>\n\n\n\n<p>Cho \u0111\u1ebfn th\u1eddi \u0111i\u1ec3m hi\u1ec7n t\u1ea1i, khoa h\u1ecdc v\u1eabn ch\u01b0a th\u1ec3 kh\u1eb3ng \u0111\u1ecbnh ch\u1eafc ch\u1eafn v\u0169 tr\u1ee5 l\u00e0 v\u00f4 h\u1ea1n hay h\u1eefu h\u1ea1n. Nh\u01b0ng c\u00e1c quan s\u00e1t hi\u1ec7n t\u1ea1i nghi\u00eang v\u1ec1 kh\u1ea3 n\u0103ng v\u0169 tr\u1ee5 l\u00e0 ph\u1eb3ng v\u00e0 c\u00f3 th\u1ec3 v\u00f4 h\u1ea1n.<\/p>\n\n\n\n<p>Tuy nhi\u00ean, v\u1edbi nh\u1eefng gi\u1edbi h\u1ea1n trong quan s\u00e1t v\u00e0 c\u00f4ng ngh\u1ec7, ch\u00fang ta v\u1eabn \u0111ang \u1edf giai \u0111o\u1ea1n t\u00ecm hi\u1ec3u. C\u00f3 l\u1ebd, trong t\u01b0\u01a1ng lai, con ng\u01b0\u1eddi s\u1ebd kh\u00e1m ph\u00e1 \u0111\u01b0\u1ee3c nhi\u1ec1u h\u01a1n v\u1ec1 b\u1ea3n ch\u1ea5t th\u1ef1c s\u1ef1 c\u1ee7a v\u0169 tr\u1ee5 \u2013 v\u00e0 li\u1ec7u n\u00f3 c\u00f3 \u201ck\u1ebft th\u00fac\u201d \u1edf \u0111\u00e2u \u0111\u00f3 hay kh\u00f4ng.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>C\u00e2u h\u1ecfi \u201cV\u0169 tr\u1ee5 c\u00f3 v\u00f4 h\u1ea1n kh\u00f4ng?\u201d l\u00e0 m\u1ed9t trong nh\u1eefng b\u00ed \u1ea9n l\u1edbn nh\u1ea5t c\u1ee7a khoa h\u1ecdc v\u00e0 tri\u1ebft h\u1ecdc hi\u1ec7n \u0111\u1ea1i. T\u1eeb thu\u1edf s\u01a1 khai, con ng\u01b0\u1eddi \u0111\u00e3 ng\u01b0\u1edbc nh\u00ecn b\u1ea7u tr\u1eddi, t\u1ef1 h\u1ecfi li\u1ec7u kh\u00f4ng gian ngo\u00e0i kia k\u00e9o d\u00e0i \u0111\u1ebfn \u0111\u00e2u<\/p>\n","protected":false},"author":1,"featured_media":19600,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[796],"tags":[2351,2352,2350,2156,2353],"class_list":["post-19599","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-vu-tru","tag-cau-hoi","tag-chua-loi-ket","tag-vo-han-khong","tag-vu-tru","tag-vu-tru-vo-han"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>V\u0169 tr\u1ee5 c\u00f3 v\u00f4 h\u1ea1n kh\u00f4ng? 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