{"id":3760,"date":"2015-09-22T21:49:32","date_gmt":"2015-09-22T14:49:32","guid":{"rendered":"http:\/\/ttud.com.vn\/?p=3760"},"modified":"2017-09-27T21:50:58","modified_gmt":"2017-09-27T14:50:58","slug":"su-song-tren-trai-dat-co-the-den-tu-vu-tru","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/su-song-tren-trai-dat-co-the-den-tu-vu-tru\/","title":{"rendered":"S\u1ef1 s\u1ed1ng tr\u00ean Tr\u00e1i \u0110\u1ea5t c\u00f3 th\u1ec3 \u0111\u1ebfn t\u1eeb v\u0169 tr\u1ee5"},"content":{"rendered":"

M\u1ed9t s\u1ed1 nh\u00e0 khoa h\u1ecdc tin r\u1eb1ng sao ch\u1ed5i \u0111\u00e3 mang c\u00e1c nguy\u00ean li\u1ec7u c\u1ea7n thi\u1ebft \u0111\u1ec3 h\u00ecnh th\u00e0nh s\u1ef1 s\u1ed1ng tr\u00ean Tr\u00e1i \u0110\u1ea5t c\u00e1ch \u0111\u00e2y kho\u1ea3ng 4 t\u1ef7 n\u0103m.<\/strong><\/p>\n

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Thuy\u1ebft Panspermia, \u0111\u01b0a ra l\u1ea7n \u0111\u1ea7u n\u0103m 1871, t\u1eebng \u0111\u01b0\u1ee3c coi l\u00e0 thi\u1ebfu th\u1ef1c t\u1ebf nh\u01b0ng hi\u1ec7n t\u00ecnh h\u00ecnh \u0111\u00e3 thay \u0111\u1ed5i, theo New Scientist. Thuy\u1ebft n\u00e0y cho r\u1eb1ng s\u1ef1 s\u1ed1ng \u0111\u01b0\u1ee3c \u0111\u01b0a \u0111\u1ebfn Tr\u00e1i \u0110\u1ea5t b\u1edfi c\u00e1c sao ch\u1ed5i v\u00e0 thi\u00ean th\u1ea1ch.<\/p>\n

Lu\u1eadn \u0111i\u1ec3m \u1ee7ng h\u1ed9 thuy\u1ebft Panspermia t\u0103ng l\u00ean g\u1ea7n \u0111\u00e2y, ph\u00e2n t\u1eed n\u01b0\u1edbc v\u00e0 h\u1eefu c\u01a1 \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y trong sao ch\u1ed5i bay qua h\u1ec7 M\u1eb7t Tr\u1eddi. Th\u1eadm ch\u00ed, c\u00f3 ng\u01b0\u1eddi c\u00f2n cho r\u1eb1ng s\u1ef1 s\u1ed1ng \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh s\u1eb5n v\u00e0 \u0111\u01b0a t\u1edbi Tr\u00e1i \u0110\u1ea5t, n\u01a1i c\u00f3 \u0111i\u1ec1u ki\u1ec7n ph\u00e1t tri\u1ec3n ho\u00e0n h\u1ea3o.<\/p>\n

“T\u00f4i cho r\u1eb1ng vi\u1ec7c coi sao H\u1ecfa nh\u01b0 ngu\u1ed3n g\u1ed1c c\u1ee7a s\u1ef1 s\u1ed1ng tr\u00ean Tr\u00e1i \u0110\u1ea5t l\u00e0 kh\u1ea3 d\u0129”, Pete Ward, nh\u00e0 sinh v\u1eadt h\u1ecdc thu\u1ed9c \u0110\u1ea1i h\u1ecdc Washington \u1edf Seattle, n\u00f3i. \u00d4ng n\u00e0y c\u0169ng cho r\u1eb1ng n\u1ebfu t\u00ecm \u0111\u01b0\u1ee3c b\u1eb1ng ch\u1ee9ng minh ch\u1ee9ng cho ngu\u1ed3n g\u1ed1c c\u1ee7a s\u1ef1 s\u1ed1ng l\u00e0 t\u1eeb ngo\u00e0i Tr\u00e1i \u0110\u1ea5t th\u00ec s\u1ebd c\u00f3 nh\u1eefng t\u00e1c \u0111\u1ed9ng r\u1ea5t l\u1edbn \u0111\u1ebfn c\u00e1c quan \u0111i\u1ec3m khoa h\u1ecdc v\u00e0 t\u00f4n gi\u00e1o.<\/p>\n

“\u0110\u00f3 s\u1ebd l\u00e0 m\u1ed9t c\u00fa s\u1ed1c l\u1edbn. \u0110\u1ed1i v\u1edbi m\u1ed9t s\u1ed1 quan ni\u1ec7m t\u00f4n gi\u00e1o ch\u00ednh th\u1ed1ng, ch\u1ec9 m\u1ed9t n\u01a1i duy nh\u1ea5t t\u1ed3n t\u1ea1i s\u1ef1 s\u1ed1ng, \u0111\u00f3 l\u00e0 Tr\u00e1i \u0110\u1ea5t”.<\/p>\n

R\u1ea5t nhi\u1ec1u nh\u00e0 khoa h\u1ecdc cho r\u1eb1ng s\u1ef1 s\u1ed1ng \u0111\u1ed9t ng\u1ed9t xu\u1ea5t hi\u1ec7n tr\u00ean Tr\u00e1i \u0110\u1ea5t kho\u1ea3ng 3,8 t\u1ef7 n\u0103m tr\u01b0\u1edbc, \u0111\u00fang v\u00e0o th\u1eddi \u0111i\u1ec3m xu\u1ea5t hi\u1ec7n c\u00e1c \u0111i\u1ec1u ki\u1ec7n ho\u00e0n h\u1ea3o \u0111\u1ec3 th\u00fac \u0111\u1ea9y s\u1ef1 s\u1ed1ng ph\u00e1t tri\u1ec3n.<\/p>\n

Gi\u00e1o s\u01b0 Chandra Wickramasinghe, m\u1ed9t nh\u00e0 sinh v\u1eadt h\u1ecdc v\u0169 tr\u1ee5 thu\u1ed9c \u0110\u1ea1i h\u1ecdc Buckingham v\u00e0 l\u00e0 ng\u01b0\u1eddi \u1ee7ng h\u1ed9 thuy\u1ebft Panspermia, tin r\u1eb1ng Tr\u00e1i \u0110\u1ea5t li\u00ean t\u1ee5c trao \u0111\u1ed5i c\u00e1c v\u1eadt ch\u1ea5t h\u1eefu c\u01a1 v\u00e0 v\u1eadt ch\u1ea5t s\u1ed1ng v\u1edbi c\u00e1c h\u00e0nh tinh thu\u1ed9c c\u00e1c h\u1ec7 m\u1eb7t tr\u1eddi l\u00e2n c\u1eadn.<\/p>\n

Trong m\u1ed9t b\u00e0i b\u00e1o tr\u00ean t\u1edd Astrobiology (Sinh v\u1eadt h\u1ecdc v\u0169 tr\u1ee5) ph\u00e1t h\u00e0nh \u0111\u1ea7u n\u0103m nay, gi\u00e1o s\u01b0 Wickramasinghe v\u00e0 \u0111\u1ed3ng nghi\u1ec7p \u0111\u00e3 l\u00fd gi\u1ea3i c\u00e1ch s\u1ef1 s\u1ed1ng \u0111\u01b0\u1ee3c \u0111\u01b0a \u0111\u1ebfn Tr\u00e1i \u0110\u1ea5t.<\/p>\n

“\u01af\u1edbc t\u00ednh c\u00f3 kho\u1ea3ng 140 t\u1ef7 h\u1ec7 h\u00e0nh tinh trong ri\u00eang thi\u00ean h\u00e0 c\u1ee7a ch\u00fang ta, h\u1ea7u h\u1ebft \u0111ang \u0111\u01b0\u1ee3c li\u00ean k\u1ebft v\u1edbi c\u00e1c ‘sao l\u00f9n \u0111\u1ecf’. Kho\u1ea3ng c\u00e1ch trung b\u00ecnh gi\u1eefa c\u00e1c h\u1ec7 h\u00e0nh tinh ph\u00f9 h\u1ee3p v\u1edbi s\u1ef1 s\u1ed1ng ch\u1ec9 l\u00e0 m\u1ed9t v\u00e0i n\u0103m \u00e1nh s\u00e1ng. Do kho\u1ea3ng c\u00e1ch n\u00e0y l\u00e0 t\u01b0\u01a1ng \u0111\u1ed1i ng\u1eafn n\u00ean c\u00e1c h\u00e0nh tinh c\u00f3 th\u1ec3 k\u1ebft n\u1ed1i v\u1edbi nhau b\u1edfi b\u1ee5i, c\u00e1c m\u1ea3nh v\u1ee1, thi\u00ean th\u1ea1ch v\u00e0 sao ch\u1ed5i.”<\/p>\n

N\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n l\u00e0 khi c\u00e1c sao ch\u1ed5i \u0111i “du l\u1ecbch” qua c\u00e1c h\u00e0nh tinh, n\u00f3 c\u00f3 th\u1ec3 g\u1eedi l\u1ea1i c\u00e1c “h\u00e0nh kh\u00e1ch” l\u00e0 ph\u00e2n t\u1eed, sinh v\u1eadt.<\/p>\n

Theo bi\u1ec3u \u0111\u1ed3 th\u1ec3 hi\u1ec7n c\u00e1c sao H-R, “sao l\u00f9n \u0111\u1ecf” nh\u1ecf v\u00e0 c\u00f3 nhi\u1ec7t \u0111\u1ed9 th\u1ea5p. Ch\u00fang chi\u1ebfm \u0111\u1ea1i \u0111a s\u1ed1 trong c\u00e1c sao v\u00e0 c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng ch\u01b0a t\u1edbi m\u1ed9t n\u1eeda kh\u1ed1i l\u01b0\u1ee3ng M\u1eb7t Tr\u1eddi v\u00e0 c\u00f3 nhi\u1ec7t \u0111\u1ed9 b\u1ec1 m\u1eb7t ch\u01b0a t\u1edbi 3.500 K.<\/p>\n

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\nM\u1eabu “vi sinh v\u1eadt” thu th\u1eadp \u0111\u01b0\u1ee3c \u1edf tr\u1eadn m\u01b0a sao b\u0103ng Perseid n\u0103m 2013. \u1ea2nh: T\u1ea1p ch\u00ed Cosmology<\/em><\/p>\n

Wickramasignhe v\u00e0 \u0111\u1ed3ng nghi\u1ec7p – ti\u1ebfn s\u0129 Milton Wainwright – l\u1ea5y d\u1eabn ch\u1ee9ng l\u00e0 nh\u1eefng g\u00ec c\u00f2n s\u00f3t l\u1ea1i c\u1ee7a nh\u1eefng “vi sinh v\u1eadt” \u0111\u01b0\u1ee3c m\u1ed9t kh\u00ed c\u1ea7u thu th\u1eadp \u1edf \u0111\u1ed9 cao 26 km trong t\u1ea7ng b\u00ecnh l\u01b0u trong tr\u1eadn m\u01b0a sao b\u0103ng Perseid n\u0103m 2013. H\u1ecd c\u0169ng nghi\u00ean c\u1ee9u v\u1eadt ch\u1ea5t tr\u00ean thi\u00ean th\u1ea1ch, ph\u00e1t hi\u1ec7n c\u00f3 c\u00e1c c\u1ea5u tr\u00fac t\u01b0\u01a1ng \u0111\u1ed3ng v\u1edbi vi sinh v\u1eadt h\u00f3a th\u1ea1ch.<\/p>\n

Ngay c\u1ea3 c\u00e1c nh\u00e0 khoa h\u1ecdc c\u1ee7a C\u01a1 quan H\u00e0ng kh\u00f4ng V\u0169 tr\u1ee5 M\u1ef9 (NASA) c\u0169ng tin r\u1eb1ng t\u00ecm th\u1ea5y b\u1eb1ng ch\u1ee9ng v\u1ec1 s\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a s\u1ef1 s\u1ed1ng ngo\u00e0i h\u1ec7 M\u1eb7t Tr\u1eddi ch\u1ec9 l\u00e0 v\u1ea5n \u0111\u1ec1 th\u1eddi gian.<\/p>\n

NASA \u0111\u00e3 s\u1eed d\u1ee5ng c\u00e1c thi\u00ean th\u1ea1ch m\u00f4 ph\u1ecfng b\u1eafn v\u00e0o kh\u00f4ng gian v\u00e0 \u0111\u1ec3 ch\u00fang bay l\u1ea1i v\u00e0o b\u1ea7u kh\u00ed quy\u1ec3n. K\u1ebft qu\u1ea3 cho th\u1ea5y ADN v\u00e0 m\u1ed9t s\u1ed1 b\u00e0o t\u1eed vi khu\u1ea9n c\u00f3 th\u1ec3 s\u1ed1ng s\u00f3t trong nhi\u1ec7t \u0111\u1ed9 c\u1ef1c cao v\u00e0 \u00e1p su\u1ea5t c\u1ef1c l\u1edbn khi bay v\u00e0o b\u1ea7u kh\u00ed quy\u1ec3n Tr\u00e1i \u0110\u1ea5t.<\/p>\n

\u0110i\u1ec1u n\u00e0y \u0111\u00e3 g\u00f3p ph\u1ea7n c\u1ee7ng c\u1ed1 v\u00e0 l\u00e0m c\u01a1 s\u1edf cho thuy\u1ebft Panspermia. M\u1ed9t s\u1ed1 nh\u00e0 khoa h\u1ecdc h\u00e0ng \u0111\u1ea7u, trong \u0111\u00f3 c\u00f3 gi\u00e1o s\u01b0 Stephen Hawking \u2013 cha \u0111\u1ebb c\u1ee7a Thuy\u1ebft v\u1ea1n v\u1eadt v\u00e0 l\u00e0 ng\u01b0\u1eddi t\u00ecm ra h\u1ed1 \u0111en, h\u1ed3i th\u00e1ng 7 \u0111\u00e3 \u1ee7ng h\u1ed9 m\u1ed9t k\u1ebf ho\u1ea1ch tr\u1ecb gi\u00e1 100 tri\u1ec7u USD \u0111\u1ec3 t\u00ecm ki\u1ebfm s\u1ef1 s\u1ed1ng ngo\u00e0i Tr\u00e1i \u0110\u1ea5t.<\/p>\n

Xem th\u00eam: \u00d4ng ho\u00e0ng v\u1eadt l\u00fd mu\u1ed1n t\u00ecm ng\u01b0\u1eddi ngo\u00e0i h\u00e0nh tinh.<\/p>\n

Tr\u1ecbnh T\u00f9ng<\/em><\/p>\n

Ngu\u1ed3n tinhte.vn<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

M\u1ed9t s\u1ed1 nh\u00e0 khoa h\u1ecdc tin r\u1eb1ng sao ch\u1ed5i \u0111\u00e3 mang c\u00e1c nguy\u00ean li\u1ec7u c\u1ea7n thi\u1ebft \u0111\u1ec3 h\u00ecnh th\u00e0nh s\u1ef1 s\u1ed1ng tr\u00ean Tr\u00e1i \u0110\u1ea5t c\u00e1ch \u0111\u00e2y kho\u1ea3ng 4 t\u1ef7 n\u0103m. Thuy\u1ebft Panspermia, \u0111\u01b0a ra l\u1ea7n \u0111\u1ea7u n\u0103m 1871, t\u1eebng \u0111\u01b0\u1ee3c coi l\u00e0 thi\u1ebfu th\u1ef1c t\u1ebf nh\u01b0ng hi\u1ec7n t\u00ecnh h\u00ecnh \u0111\u00e3 thay \u0111\u1ed5i, theo New Scientist. […]<\/p>\n","protected":false},"author":17,"featured_media":3762,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-3760","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\/3760","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=3760"}],"version-history":[{"count":1,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/3760\/revisions"}],"predecessor-version":[{"id":3763,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/3760\/revisions\/3763"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media\/3762"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=3760"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=3760"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=3760"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}