{"id":4851,"date":"2016-04-06T06:43:37","date_gmt":"2016-04-05T23:43:37","guid":{"rendered":"http:\/\/ttud.com.vn\/?p=4851"},"modified":"2017-10-02T13:49:50","modified_gmt":"2017-10-02T06:49:50","slug":"dung-tia-laser-che-giau-trai-dat-truoc-anh-mat-dom-ngo-cua-nguoi-ngoai-hanh-tinh","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/dung-tia-laser-che-giau-trai-dat-truoc-anh-mat-dom-ngo-cua-nguoi-ngoai-hanh-tinh\/","title":{"rendered":"D\u00f9ng tia laser che gi\u1ea5u Tr\u00e1i \u0110\u1ea5t tr\u01b0\u1edbc \u00e1nh m\u1eaft d\u00f2m ng\u00f3 c\u1ee7a ng\u01b0\u1eddi ngo\u00e0i h\u00e0nh tinh"},"content":{"rendered":"<p><strong>V\u0169 tr\u1ee5 \u1ea9n ch\u1ee9a nhi\u1ec1u b\u00ed \u1ea9n v\u00e0 bi\u1ebft \u0111\u00e2u ng\u01b0\u1eddi ngo\u00e0i h\u00e0nh tinh v\u1eabn \u0111ang theo d\u00f5i nh\u1ea5t c\u1eed nh\u1ea5t \u0111\u1ed9ng c\u1ee7a ch\u00fang ta? \u0110\u1ec3 ng\u0103n ch\u1eb7n nh\u1eefng \u00e1nh m\u1eaft d\u00f2m ng\u00f3, ch\u00fang ta c\u00f3 th\u1ec3 d\u00f9ng m\u1ed9t ch\u00f9m tia laser \u0111\u01a1n gi\u1ea3n ph\u00e1t ra t\u1eeb Tr\u00e1i \u0110\u1ea5t v\u00e0 ng\u01b0\u1eddi ngo\u00e0i h\u00e0nh tinh khi nh\u00ecn v\u00e0o s\u1ebd c\u00f3 c\u1ea3m gi\u00e1c nh\u01b0 &#8220;Tr\u00e1i \u0110\u1ea5t kh\u00f4ng t\u1ed3n t\u1ea1i&#8221; ho\u1eb7c kh\u00f4ng c\u00f3 ai \u1edf \u0111\u00e2y!&#8221;.<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-5408\" src=\"http:\/\/ttud.com.vn\/wp-content\/uploads\/2016\/04\/06042016103901-duytran3652895_CV_laser_tan_hinh.jpg\" alt=\"\" width=\"284\" height=\"188\" \/><\/p>\n<p>\u00dd t\u01b0\u1edfng tr\u00ean \u0111\u01b0\u1ee3c David Kipping &#8211; m\u1ed9t nh\u00e0 thi\u00ean v\u0103n h\u1ecdc \u0111\u1ebfn t\u1eeb \u0111\u1ea1i h\u1ecdc Columbia, New York \u0111\u1ec1 xu\u1ea5t k\u1ec3 t\u1eeb khi \u0111\u01b0\u1ee3c bi\u1ebft v\u1ec1 m\u1ed9t ng\u00f4i sao s\u00e1ng t\u1ed1i b\u1ea5t th\u01b0\u1eddng v\u1eeba \u0111\u01b0\u1ee3c k\u00ednh thi\u00ean v\u0103n v\u0169 tr\u1ee5 Kepler c\u1ee7a NASA ph\u00e1t hi\u1ec7n g\u1ea7n \u0111\u00e2y. T\u1eeb \u0111\u00e2y, c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u suy \u0111o\u00e1n r\u1eb1ng t\u00edn hi\u1ec7u c\u00f3 th\u1ec3 xu\u1ea5t ph\u00e1t t\u1eeb &#8220;nh\u1eefng si\u00eau c\u1ea5u tr\u00fac ngo\u00e0i h\u00e0nh tinh&#8221; \u0111ang bay quanh ng\u00f4i sao n\u00e0y.<\/p>\n<p>Nhi\u1ec1u nh\u00e0 khoa h\u1ecdc nh\u1ea5n m\u1ea1nh r\u1eb1ng \u0111\u00e2y c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t kh\u1ea3 n\u0103ng b\u1edfi t\u00edn hi\u1ec7u k\u1ef3 l\u1ea1 t\u1eeb ng\u00f4i sao kh\u00f4ng gi\u1ed1ng nh\u01b0 \u0111\u01b0\u1ee3c g\u00e2y ra b\u1edfi c\u00e1c y\u1ebfu t\u1ed1 t\u1ef1 nhi\u00ean. Nh\u1eefng quan s\u00e1t c\u1ee7a k\u00ednh thi\u00ean v\u0103n Kepler khi\u1ebfn Kipping ngh\u0129 \u0111\u1ebfn nh\u1eefng c\u00e1ch th\u1ee9c \u0111\u1ec3 con ng\u01b0\u1eddi c\u00f3 th\u1ec3 l\u00e0m sai l\u1ec7ch t\u00edn hi\u1ec7u m\u00e0 ng\u01b0\u1eddi ngo\u00e0i h\u00e0nh tinh g\u1edfi v\u00e0o kh\u00f4ng gian ho\u1eb7c gi\u00fap con ng\u01b0\u1eddi \u1ea9n n\u1ea5p tr\u01b0\u1edbc nh\u1eefng th\u1ebf l\u1ef1c c\u00f3 th\u1ec3 \u0111e d\u1ecda \u0111\u1ebfn s\u1ef1 t\u1ed3n vong.<\/p>\n<p>Kipping c\u00f9ng sinh vi\u00ean t\u1ed1t nghi\u1ec7p Alex Teachey \u0111\u00e3 k\u1ebft lu\u1eadn r\u1eb1ng vi\u1ec7c lo\u1ea1i b\u1ecf t\u00edn hi\u1ec7u quan s\u00e1t Tr\u00e1i \u0110\u1ea5t t\u1eeb kh\u00f4ng gian th\u1ef1c ra r\u1ea5t d\u1ec5 d\u00e0ng, c\u00f3 th\u1ec3 l\u00e0m nhi\u1ec5u ho\u1eb7c th\u1eadm ch\u00ed l\u00e0 ch\u1ec9nh s\u1eeda \u0111\u1ec3 che gi\u1ea5u d\u1ea5u v\u1ebft s\u1ef1 s\u1ed1ng. Kipping n\u00f3i: &#8220;V\u1ec1 c\u01a1 b\u1ea3n ch\u00fang t\u00f4i \u0111\u1eb7t ra m\u1ed9t gi\u1ea3 thuy\u1ebft r\u1eb1ng n\u1ebfu nh\u01b0 ch\u00fang ta th\u1eadt s\u1ef1 c\u00f3 xu h\u01b0\u1edbng b\u00e0i ngo\u1ea1i (b\u00e0i tr\u1eeb ng\u01b0\u1eddi ngo\u00e0i h\u00e0nh tinh) v\u00e0 mu\u1ed1n ph\u00f2ng ng\u1eeba kh\u1ea3 n\u0103ng Tr\u00e1i \u0110\u1ea5t b\u1ecb d\u00f2m ng\u00f3 (nh\u01b0 Stephen Hawking v\u00e0 nhi\u1ec1u nh\u00e0 khoa h\u1ecdc \u0111\u00e3 c\u1ea3nh b\u00e1o) th\u00ec li\u1ec7u ch\u00fang ta c\u00f3 th\u1ec3 \u1ea9n gi\u1ea5u Tr\u00e1i \u0110\u1ea5t tr\u01b0\u1edbc nh\u1eefng k\u1ebb s\u0103n h\u00e0nh tinh hay kh\u00f4ng?&#8221;<\/p>\n<p><strong>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ch\u1ebf t\u1ea1o m\u1ed9t thi\u1ebft b\u1ecb t\u00e0ng h\u00ecnh:<\/strong><\/p>\n<p>\u00dd t\u01b0\u1edfng c\u1ee7a Kipping v\u00e0 Teachey l\u1ee3i d\u1ee5ng c\u00e1ch th\u1ee9c con ng\u01b0\u1eddi \u0111\u00e3 d\u00f9ng \u0111\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c h\u00e0nh tinh xung quanh ng\u00f4i sao m\u1eb9 c\u1ee7a ch\u00fang, c\u1ee5 th\u1ec3 l\u00e0 ph\u01b0\u01a1ng ph\u00e1p qua m\u1eb7t ( transit method). \u0110\u00e2y c\u0169ng l\u00e0 k\u1ef9 thu\u1eadt \u0111\u01b0\u1ee3c k\u00ednh thi\u00ean v\u0103n v\u0169 tr\u1ee5 Kepler s\u1eed d\u1ee5ng khi t\u00ecm ki\u1ebfm c\u00e1c h\u00e0nh tinh. Kepler c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n nh\u1eefng ch\u00eanh l\u1ec7ch s\u00e1ng t\u1ed1i r\u1ea5t nh\u1ecf c\u1ee7a m\u1ed9t ng\u00f4i sao v\u00e0 s\u1ef1 ch\u00eanh l\u1ec7ch n\u00e0y ch\u1ec9 ra r\u1eb1ng c\u00f3 m\u1ed9t h\u00e0nh tinh \u0111ang bay ngang qua ng\u00f4i sao \u0111\u00f3.<\/p>\n<p>Ph\u01b0\u01a1ng ph\u00e1p ph\u00e1t hi\u1ec7n h\u00e0nh tinh bay c\u1eaft m\u1eb7t tr\u00ean l\u00fd thuy\u1ebft c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ng\u01b0\u1eddi ngo\u00e0i h\u00e0nh tinh khai th\u00e1c \u0111\u1ec3 ph\u00e1t hi\u1ec7n Tr\u00e1i \u0110\u1ea5t. Tuy nhi\u00ean, v\u1eabn c\u00f3 m\u1ed9t c\u00e1ch \u0111\u1ec3 \u0111\u01b0a ch\u00fang ta ra kh\u1ecfi ph\u1ea1m vi t\u00ecm ki\u1ebfm t\u1eeb c\u00e1c th\u1ef1c th\u1ec3 ngo\u00e0i Tr\u00e1i \u0110\u1ea5t n\u00e0y. Theo Kipping v\u00e0 Teachey: &#8220;\u0110\u1ec3 khi\u1ebfn cho Tr\u00e1i \u0110\u1ea5t tr\u1edf n\u00ean v\u00f4 h\u00ecnh, b\u1ea1n c\u1ea7n ph\u1ea3i gi\u1ea3i quy\u1ebft hi\u1ec7n t\u01b0\u1ee3ng ch\u00eanh l\u1ec7ch s\u00e1ng t\u1ed1i hay ph\u1ea3i b\u00f9 s\u00e1ng cho ph\u1ea7n \u00e1nh s\u00e1ng m\u1ea5t \u0111i khi bay ngang M\u1eb7t Tr\u1eddi.&#8221;<\/p>\n<p>C\u00e1c k\u1ef9 s\u01b0 c\u00f3 th\u1ec3 t\u1ea1o ra m\u1ed9t tia laser c\u1ef1c s\u00e1ng ho\u1eb7c t\u1eadp h\u1ee3p c\u00e1c tia laser h\u01b0\u1edbng \u0111\u1ebfn m\u1ed9t ng\u00f4i sao t\u00ecnh nghi l\u00e0 nh\u00e0 c\u1ee7a ng\u01b0\u1eddi ngo\u00e0i h\u00e0nh tinh trong kho\u1ea3ng th\u1eddi gian Tr\u00e1i \u0110\u1ea5t di chuy\u1ec3n ngang m\u1eb7t M\u1eb7t Tr\u1eddi t\u1eeb kho\u1ea3ng c\u00e1ch quan s\u00e1t t\u01b0\u01a1ng \u1ee9ng. Nh\u1edd \u0111\u00f3, nh\u1eefng ph\u00e9p \u0111o \u0111\u1ea1t c\u1ee7a ng\u01b0\u1eddi ngo\u00e0i h\u00e0nh tinh s\u1ebd kh\u00f4ng ph\u00e1t hi\u1ec7n ra nh\u1eefng thay \u0111\u1ed5i v\u1ec1 \u0111\u1ed9 s\u00e1ng c\u1ee7a M\u1eb7t Tr\u1eddi.<\/p>\n<p><iframe loading=\"lazy\" title=\"A Cloaking Device for Planets\" width=\"625\" height=\"352\" src=\"https:\/\/www.youtube.com\/embed\/z1Pqqf_6J9w?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p>N\u00f3i v\u1edbi Space.com, Kipping cho bi\u1ebft: &#8220;T\u00f4i \u0111\u00e3 b\u1eaft \u0111\u1ea7u ngh\u0129 \u0111\u1ebfn c\u00e1c tia laser. Tr\u1edf ng\u1ea1i l\u1edbn nh\u1ea5t v\u1eabn l\u00e0 \u00e1nh s\u00e1ng ph\u00e1t ra t\u1eeb M\u1eb7t Tr\u1eddi r\u1ea5t m\u1ea1nh v\u1eady l\u00e0m th\u1ebf n\u00e0o b\u1ea1n c\u00f3 th\u1ec3 t\u1ea1o ra m\u1ed9t ch\u00f9m tia laser c\u00f3 th\u1ec3 \u0111\u1ecd \u0111\u01b0\u1ee3c v\u1edbi M\u1eb7t Tr\u1eddi? Th\u1ebf nh\u01b0ng khi b\u1ea1n d\u00f9ng c\u00e1c ph\u01b0\u01a1ng tr\u00ecnh th\u00ec k\u1ebft qu\u1ea3 l\u1ea1i kh\u00e1 kh\u1ea3 quan&#8221;. Teachey kh\u1eb3ng \u0111\u1ecbnh: &#8220;Ch\u00fang t\u00f4i c\u00f3 th\u1ec3 ch\u1ebf t\u1ea1o n\u00f3 ngay trong tu\u1ea7n t\u1edbi n\u1ebfu mu\u1ed1n&#8221;.<\/p>\n<p>\u0110\u1ec3 thay \u0111\u1ed5i d\u1ea5u hi\u1ec7u \u0111\u1eb7c tr\u01b0ng c\u1ee7a Tr\u00e1i \u0110\u1ea5t khi quan s\u00e1t qua m\u1ed9t chi\u1ebfc k\u00ednh thi\u00ean v\u0103n ki\u1ec3u nh\u01b0 Kepler, m\u1ed9t h\u1ec7 th\u1ed1ng laser s\u1ebd c\u1ea7n ph\u1ea3i ph\u00e1t ra ch\u00f9m tia c\u00f4ng su\u1ea5t 30 MW trong kho\u1ea3ng 10 gi\u1edd m\u1ed7i n\u0103m, tr\u00f9ng kh\u1edbp v\u1edbi kho\u1ea3ng th\u1eddi gian Tr\u00e1i \u0110\u1ea5t bay c\u1eaft m\u1eb7t M\u1eb7t Tr\u1eddi theo t\u00ednh to\u00e1n c\u1ee7a Kipping v\u00e0 Teachey.<\/p>\n<p>Nh\u01b0 v\u1eady con s\u1ed1 n\u00e0y th\u1ea5p h\u01a1n nhi\u1ec1u so v\u1edbi n\u0103ng l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c c\u00e1c t\u1ea5m pin quang \u0111i\u1ec7n tr\u00ean tr\u1ea1m kh\u00f4ng gian ISS thu th\u1eadp trong 1 n\u0103m hay t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi n\u0103ng l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c 70 c\u0103n nh\u00e0 ti\u00eau th\u1ee5 trong 1 n\u0103m, theo Kipping. M\u1ed9t h\u1ec7 th\u1ed1ng laser nh\u01b0 v\u1eady d\u00f9 \u0111\u01b0\u1ee3c \u0111\u1eb7t tr\u00ean Tr\u00e1i \u0110\u1ea5t hay tr\u00ean qu\u1ef9 \u0111\u1ea1o s\u1ebd c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng pin quang \u0111i\u1ec7n \u0111\u01b0\u1ee3c s\u1ea1c trong su\u1ed1t 1 n\u0103m, sau \u0111\u00f3 gi\u1ea3i ph\u00f3ng m\u1ed9t ch\u00f9m tia laser n\u0103ng l\u01b0\u1ee3ng l\u1edbn v\u00e0o \u0111\u00fang th\u1eddi \u0111i\u1ec3m, s\u00e1ng ngang ng\u1eeda M\u1eb7t Tr\u1eddi.<\/p>\n<p>M\u1eb7c d\u00f9 tia laser v\u1edbi c\u01b0\u1eddng \u0111\u1ed9 l\u1edbn nh\u01b0 v\u1eady v\u1eabn ch\u01b0a \u0111\u01b0\u1ee3c t\u1ea1o ra tr\u01b0\u1edbc \u0111\u00e2y nh\u01b0ng c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u cho r\u1eb1ng h\u1ec7 th\u1ed1ng t\u00e0ng h\u00ecnh d\u00f9ng tia laser s\u1ebd c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng nhi\u1ec1u tia nh\u1ecf, t\u1ea5t c\u1ea3 nh\u1ea5t lo\u1ea1t chi\u1ebfu theo m\u1ed9t h\u01b0\u1edbng. M\u1ed9t ng\u00f4i sao l\u1ea1 s\u1ebd \u1edf kho\u1ea3ng c\u00e1ch r\u1ea5t xa do \u0111\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 \u0111\u1ed9 s\u00e1ng (gi\u1eefa ch\u00f9m tia laser v\u00e0 M\u1eb7t Tr\u1eddi) s\u1ebd kh\u00f3 c\u00f3 th\u1ec3 ph\u00e2n bi\u1ec7t \u0111\u01b0\u1ee3c. C\u00e1c ch\u00f9m laser \u0111\u01b0\u1ee3c \u0111\u1ecbnh h\u01b0\u1edbng v\u00e0 chi\u1ebfu s\u00e1ng t\u1eadp trung nh\u01b0ng khi truy\u1ec1n \u0111i \u1edf kho\u1ea3ng c\u00e1ch l\u1edbn, ch\u00f9m laser s\u1ebd \u0111\u01b0\u1ee3c ph\u00f3ng \u0111\u1ea1i, \u0111\u1ee7 l\u1edbn \u0111\u1ec3 c\u00f3 th\u1ec3 ti\u1ebfp c\u1eadn thi\u1ebft b\u1ecb th\u0103m d\u00f2 c\u1ee7a ng\u01b0\u1eddi ngo\u00e0i h\u00e0nh tinh m\u00e0 kh\u00f4ng \u0111\u00f2i h\u1ecfi \u0111\u1ed9 ch\u00ednh x\u00e1c cao.<\/p>\n<p>B\u1eb1ng c\u00e1ch l\u00e0m bi\u1ebfn thi\u00ean b\u01b0\u1edbc s\u00f3ng v\u00e0 c\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a ch\u00f9m tia, con ng\u01b0\u1eddi c\u00f3 th\u1ec3 che gi\u1ea5u Tr\u00e1i \u0110\u1ea5t t\u1eeb c\u00e1c thi\u1ebft b\u1ecb th\u0103m d\u00f2 ph\u1ee9c t\u1ea1p h\u01a1n. C\u01a1 ch\u1ebf t\u00e0ng h\u00ecnh n\u00e0y c\u00f3 th\u1ec3 \u1ea9n gi\u1ea5u Tr\u00e1i \u0110\u1ea5t tr\u01b0\u1edbc t\u1ea5t c\u1ea3 c\u00e1c b\u01b0\u1edbc s\u00f3ng c\u00f3 c\u00f4ng su\u1ea5t l\u00ean \u0111\u1ebfn 250 MW khi ch\u00f9m laser \u0111\u01b0\u1ee3c gi\u1ea3i ph\u00f3ng \u1edf c\u00e1c b\u01b0\u1edbc s\u00f3ng kh\u00e1c nhau. Ch\u00f9m laser s\u1ebd khi\u1ebfn c\u00e1c t\u00edn hi\u1ec7u \u0111\u1eb7c tr\u01b0ng c\u1ee7a Tr\u00e1i \u0110\u1ea5t tr\u00f4ng gi\u1ed1ng nh\u01b0 m\u1ecdi th\u1ee9 m\u00e0 ng\u01b0\u1eddi ngo\u00e0i h\u00e0nh tinh c\u00f3 th\u1ec3 ngh\u0129 ra, th\u1eadm ch\u00ed l\u00e0 xu\u1ea5t hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng c\u00e1c v\u1eadt th\u1ec3 kh\u00e1c bi\u1ec7t, nh\u00e2n t\u1ea1o.<\/p>\n<p>Tuy nhi\u00ean, \u1ee9ng d\u1ee5ng th\u00fa v\u1ecb nh\u1ea5t c\u1ee7a h\u1ec7 th\u1ed1ng theo c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u l\u00e0 kh\u1ea3 n\u0103ng &#8220;t\u00e0ng h\u00ecnh sinh h\u1ecdc&#8221;. C\u1ee5 th\u1ec3 l\u00e0 khi m\u1ed9t h\u00e0nh tinh bay c\u1eaft m\u1eb7t ng\u00f4i sao ch\u1ee7 c\u1ee7a n\u00f3, m\u1ed9t ph\u1ea7n \u00e1nh s\u00e1ng s\u1ebd xuy\u00ean qua kh\u00ed quy\u1ec3n c\u1ee7a h\u00e0nh tinh v\u00e0 t\u1eeb \u0111\u00e2y c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c c\u00e1c th\u00e0nh ph\u1ea7n t\u1ea1o n\u00ean kh\u00ed quy\u1ec3n d\u1ef1a tr\u00ean c\u00e1c b\u01b0\u1edbc s\u00f3ng \u00e1nh s\u00e1ng. B\u1eb1ng c\u00e1ch ph\u00f3ng c\u00e1c ch\u00f9m laser l\u00e0m \u0111\u1ea3o ng\u01b0\u1ee3c c\u00e1c b\u01b0\u1edbc s\u00f3ng nh\u1ea5t \u0111\u1ecbnh, con ng\u01b0\u1eddi c\u00f3 th\u1ec3 \u00e2m th\u00e2m ch\u1ec9nh s\u1eeda c\u00e1c d\u1ea5u hi\u1ec7u sinh h\u1ecdc v\u1ed1n c\u00f3 trong kh\u00ed quy\u1ec3n Tr\u00e1i \u0110\u1ea5t, Kipping n\u00f3i.<\/p>\n<p>&#8220;Th\u1ef1c t\u1ebf ch\u00fang t\u00f4i c\u00f3 th\u1ec3 lo\u1ea1i b\u1ecf nh\u1eefng d\u1ea5u hi\u1ec7u sinh h\u1ecdc \u0111\u1eb7c tr\u01b0ng c\u1ee7a s\u1ef1 s\u1ed1ng, ch\u1eb3ng h\u1ea1n nh\u01b0 oxy. Nh\u1eefng n\u1ec1n v\u0103n minh ngo\u00e0i h\u00e0nh tinh s\u1ebd c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n ra ho\u1ea1t \u0111\u1ed9ng bay c\u1eaft m\u1eb7t sao ch\u1ee7 c\u1ee7a m\u1ed9t h\u00e0nh tinh n\u00e0o \u0111\u00f3. H\u1ecd c\u0169ng s\u1ebd c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n ra v\u1eadn t\u1ed1c t\u1ef1 quay c\u1ee7a h\u00e0nh tinh nh\u01b0ng sau khi h\u1ecd ph\u00e1t hi\u1ec7n ra kh\u00ed quy\u1ec3n th\u00ec c\u00f3 v\u1ebb nh\u01b0 h\u00e0nh tinh n\u00e0y &#8220;kh\u00f4ng \u0111\u01b0\u1ee3c ngon cho l\u1eafm&#8221;. N\u00f3 s\u1ebd gi\u1ed1ng nh\u01b0 m\u1ed9t th\u1ebf gi\u1edbi ch\u1ebft.&#8221;<\/p>\n<p>M\u1eb7c d\u00f9 c\u00f3 nhi\u1ec1u ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c \u0111\u1ec3 ph\u00e1t hi\u1ec7n m\u1ed9t h\u00e0nh tinh, ch\u1eb3ng h\u1ea1n nh\u01b0 l\u1ef1c h\u1ea5p d\u1eabn b\u1edfi ng\u00f4i sao c\u1ee7a n\u00f3 nh\u01b0ng c\u01a1 ch\u1ebf \u1ea9n m\u00ecnh b\u1eb1ng tia laser s\u1ebd \u00edt g\u00e2y nghi ng\u1edd h\u01a1n b\u1edfi h\u00e0nh tinh c\u00f3 th\u1ec3 \u0111\u00e3 \u1edf \u0111\u00f3, v\u1ecb tr\u00ed \u0111\u00f3 nh\u01b0 d\u1ef1 \u0111o\u00e1n nh\u01b0ng n\u00f3 kh\u00f4ng c\u00f3 c\u00e1c d\u1ea5u hi\u1ec7u c\u1ee7a s\u1ef1 s\u1ed1ng.<\/p>\n<p><strong>Nh\u1eefng kh\u1ea3 n\u0103ng kh\u00e1c:<\/strong><\/p>\n<p>Vi\u1ec7c che gi\u1ea5u s\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a Tr\u00e1i \u0110\u1ea5t t\u1eeb c\u00e1c th\u1ebf l\u1ef1c ngo\u00e0i h\u00e0nh tinh hay c\u00f4ng b\u1ed1 s\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a Tr\u00e1i \u0110\u1ea5t v\u1edbi m\u1ed9t ch\u00f9m \u00e1nh s\u00e1ng nh\u00e2n t\u1ea1o s\u1ebd ch\u1ec9 kh\u1ea3 d\u1ee5ng n\u1ebfu con ng\u01b0\u1eddi bi\u1ebft \u0111\u01b0\u1ee3c ng\u01b0\u1eddi ngo\u00e0i h\u00e0nh tinh \u0111ang s\u1ed1ng \u1edf \u0111\u00e2u. Tuy nhi\u00ean, \u00fd t\u01b0\u1edfng c\u1ee7a Kipping v\u00e0 Teachey v\u1eabn khi\u1ebfn c\u00e1c nh\u00e0 khoa h\u1ecdc th\u00edch th\u00fa b\u1edfi gi\u1edbi thi\u00ean v\u0103n v\u1eabn \u0111ang t\u00ecm c\u00e1ch gi\u1ea3i m\u00e3 t\u00edn hi\u1ec7u \u00e1nh s\u00e1ng t\u1eeb c\u00e1c ng\u00f4i sao c\u0169ng nh\u01b0 \u0111\u01b0a ra nh\u1eefng d\u1ef1 \u0111o\u00e1n r\u1eb1ng c\u00e1c nh\u00e0 thi\u00ean v\u0103n ngo\u00e0i h\u00e0nh tinh c\u0169ng \u0111ang \u0111\u1ecdc t\u00edn hi\u1ec7u t\u1eeb Tr\u00e1i \u0110\u1ea5t.<\/p>\n<p>Kipping v\u00e0 Teachey g\u1ee3i \u00fd r\u1eb1ng c\u00e1c n\u1ec1n v\u0103n minh ngo\u00e0i h\u00e0nh tinh c\u00f3 th\u1ec3 giao ti\u1ebfp v\u1edbi nhau nh\u1edd s\u1ef1 bi\u1ebfn thi\u00ean c\u1ee7a t\u00edn hi\u1ec7n \u00e1nh s\u00e1ng trong qu\u00e1 tr\u00ecnh h\u00e0nh tinh bay c\u1eaft m\u1eb7t sao ch\u1ee7. Ng\u01b0\u1eddi ngo\u00e0i h\u00e0nh tinh c\u0169ng c\u00f3 th\u1ec3 g\u1edfi \u0111i c\u00e1c t\u00edn hi\u1ec7u laser m\u00e3 h\u00f3a.<\/p>\n<p>M\u1ed9t trong nh\u1eefng kh\u1ea3 n\u0103ng ti\u1ebfp theo l\u00e0 ph\u00e2n t\u00edch k\u1ef9 h\u01a1n d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c Kepler thu th\u1eadp \u0111\u1ec3 t\u00ecm ki\u1ebfm c\u00e1c t\u00edn hi\u1ec7u nh\u00e2n t\u1ea1o t\u1eeb kh\u00f4ng gian s\u00e2u. Jason Wright &#8211; nh\u00e0 thi\u00ean v\u0103n h\u1ecdc \u0111\u1ebfn t\u1eeb \u0111\u1ea1i h\u1ecdc Pennsylvania \u0111\u00e3 v\u1eeba c\u00f4ng b\u1ed1 m\u1ed9t nghi\u00ean c\u1ee9u n\u00f3i v\u1ec1 c\u00e1ch c\u00e1c nh\u00e0 khoa h\u1ecdc c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c n\u1ec1n v\u0103n minh ti\u00ean ti\u1ebfn t\u1ed3n t\u1ea1i quanh nh\u1eefng ng\u00f4i sao kh\u00e1c. Theo \u00f4ng, nh\u1eefng si\u00eau c\u1ea5u tr\u00fac c\u1ee7a ng\u01b0\u1eddi ngo\u00e0i h\u00e0nh tinh c\u00f3 th\u1ec3 l\u00e0m ng\u00f4i sao ch\u1ee7 c\u1ee7a h\u1ecd m\u1edd \u0111i trong khi laser th\u00ec khi\u1ebfn sao ch\u1ee7 s\u00e1ng l\u00ean, do \u0111\u00f3 &#8220;ch\u00fang ta ph\u1ea3i xem x\u00e9t c\u1ea3 2 tr\u01b0\u1eddng h\u1ee3p n\u00e0y&#8221;.<\/p>\n<p>V\u1ec1 kh\u00eda c\u1ea1nh c\u00f4ng ngh\u1ec7 t\u00e0ng h\u00ecnh b\u1eb1ng laser tr\u00ean Tr\u00e1i \u0110\u1ea5t, Wright n\u00f3i: &#8220;Th\u1eddi \u0111i\u1ec3m c\u00f4ng ngh\u1ec7 n\u00e0y h\u1eefu d\u1ee5ng \u0111\u1ed1i v\u1edbi ch\u00fang ta l\u00e0 n\u1ebfu ch\u00fang ta bi\u1ebft \u0111\u01b0\u1ee3c c\u00e1c n\u1ec1n v\u0103n minh kh\u00e1c \u0111ang sinh s\u1ed1ng trong d\u1ea3i ng\u00e2n h\u00e0 v\u00e0 c\u00f3 th\u1ec3 quan s\u00e1t Tr\u00e1i \u0110\u1ea5t bay c\u1eaft m\u1eb7t M\u1eb7t Tr\u1eddi.&#8221;<\/p>\n<p>Trong khi \u0111\u00f3, Avi Loeb &#8211; ch\u1ee7 t\u1ecbch khoa thi\u00ean v\u0103n h\u1ecdc thu\u1ed9c \u0111\u1ea1i h\u1ecdc Harvard cho bi\u1ebft ph\u01b0\u01a1ng ph\u00e1p t\u00e0ng h\u00ecnh b\u1eb1ng tia laser ch\u1ec9 ph\u00e1t huy hi\u1ec7u qu\u1ea3 khi c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u bi\u1ebft \u0111\u01b0\u1ee3c ph\u1ea3i t\u00ecm ki\u1ebfm \u1edf \u0111\u00e2u v\u00e0 gi\u1ea3 \u0111\u1ecbnh r\u1eb1ng ng\u01b0\u1eddi ngo\u00e0i h\u00e0nh tinh kh\u00f4ng quan s\u00e1t ch\u00fang ta t\u1eeb c\u00e1c con t\u00e0u v\u0169 tr\u1ee5 \u0111ang di chuy\u1ec3n v\u00e0 ng\u01b0\u1eddi quan s\u00e1t ch\u1ec9 d\u1ef1a tr\u00ean ho\u1ea1t \u0111\u1ed9ng bay c\u1eaft m\u1eb7t sao ch\u1ee7 \u0111\u1ec3 th\u0103m d\u00f2 h\u00e0nh tinh.<\/p>\n<p>Ngo\u00e0i ra, nhu c\u1ea7u n\u0103ng l\u01b0\u1ee3ng s\u1ebd t\u0103ng nhanh ch\u00f3ng khi m\u1ed9t n\u1ec1n v\u0103n minh c\u1ed1 g\u1eafng \u1ea9n m\u00ecnh tr\u01b0\u1edbc c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i hay n\u1ed5 l\u1ef1c ph\u00e1t t\u00edn hi\u1ec7u \u0111i hay s\u1ed1 l\u01b0\u1ee3ng h\u1ec7 sao c\u1ea7n quan s\u00e1t ng\u00e0y m\u1ed9t t\u0103ng, Loeb n\u00f3i. Tuy nhi\u00ean, \u00fd t\u01b0\u1edfng t\u00e0ng h\u00ecnh b\u1eb1ng laser v\u1eabn r\u1ea5t th\u00fa v\u1ecb v\u00e0 n\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c b\u1ed5 sung v\u00e0o b\u1ed9 c\u00e1c gi\u1ea3i ph\u00e1p t\u00ecm ki\u1ebfm s\u1ef1 s\u1ed1ng ngo\u00e0i Tr\u00e1i \u0110\u1ea5t.<\/p>\n<p style=\"text-align: right;\"><em>Theo: Space\u200b<\/em><\/p>\n<p style=\"text-align: right;\"><em>Ngu\u1ed3n tinhte.vn<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>V\u0169 tr\u1ee5 \u1ea9n ch\u1ee9a nhi\u1ec1u b\u00ed \u1ea9n v\u00e0 bi\u1ebft \u0111\u00e2u ng\u01b0\u1eddi ngo\u00e0i h\u00e0nh tinh v\u1eabn \u0111ang theo d\u00f5i nh\u1ea5t c\u1eed nh\u1ea5t \u0111\u1ed9ng c\u1ee7a ch\u00fang ta? \u0110\u1ec3 ng\u0103n ch\u1eb7n nh\u1eefng \u00e1nh m\u1eaft d\u00f2m ng\u00f3, ch\u00fang ta c\u00f3 th\u1ec3 d\u00f9ng m\u1ed9t ch\u00f9m tia laser \u0111\u01a1n gi\u1ea3n ph\u00e1t ra t\u1eeb Tr\u00e1i \u0110\u1ea5t v\u00e0 ng\u01b0\u1eddi ngo\u00e0i h\u00e0nh tinh khi [&hellip;]<\/p>\n","protected":false},"author":17,"featured_media":5408,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-4851","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"_links":{"self":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/4851","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/users\/17"}],"replies":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/comments?post=4851"}],"version-history":[{"count":2,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/4851\/revisions"}],"predecessor-version":[{"id":5409,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/4851\/revisions\/5409"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media\/5408"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=4851"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=4851"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=4851"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}