V\u0169 tr\u1ee5 b\u1eaft ngu\u1ed3n nh\u01b0 th\u1ebf n\u00e0o? T\u1eeb c\u1ed5 ch\u00ed kim, t\u1eeb trong \u0111\u1ebfn ngo\u00e0i ai c\u0169ng \u0111\u1ec1u quan t\u00e2m \u0111\u1ebfn v\u1ea5n \u0111\u1ec1 n\u00e0y. V\u1ec1 ph\u01b0\u01a1ng di\u1ec7n n\u00e0y c\u00f3 r\u1ea5t nhi\u1ec1u truy\u1ec1n thuy\u1ebft, th\u1ea9n tho\u1ea1i, c\u0169ng c\u00f3 ng\u01b0\u1eddi n\u00eau ra kh\u00f4ng \u00edt gi\u1ea3 thuy\u1ebft khoa h\u1ecdc. Nh\u00e0 thi\u00ean v\u0103n h\u1ecdc ng\u01b0\u1eddi M\u1ef9 James\u0111\u00e3 t\u1eebng n\u00eaul\u00ean m\u1ed9t quan \u0111i\u1ec3m m\u1edbi, \u00f4ng ta cho r\u1eb1ng v\u0169 tr\u1ee5 \u0111\u00e3 t\u1eebng c\u00f3 m\u1ed9t qu\u00e1 tr\u00ecnh t\u1eeb \u0111\u1eb7c \u0111\u1ebfn lo\u00e3ng, t\u1eeb n\u00f3ng \u0111\u1ebfn l\u1ea1nh, kh\u00f4ng ng\u1eebng d\u00e3n n\u1edf. Qu\u00e1 tr\u00ecnh n\u00e0y h\u00ecnh nh\u01b0 l\u00e0 m\u1ed9t v\u1ee5 n\u1ed5 c\u00f3 quy m\u00f4 l\u1edbn. N\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n, v\u0169 tr\u1ee5 b\u1eaft ngu\u1ed3n t\u1eeb m\u1ed9t v\u1ee5 n\u1ed5 l\u1edbn. Thuy\u1ebft v\u0169 tr\u1ee5 n\u1ed5 l\u1edbn l\u00e0 m\u1ed9t h\u1ecdc thuy\u1ebft n\u1ed5i ti\u1ebfng nh\u1ea5t v\u00e0 c\u00f3 \u1ea3nh h\u01b0\u1edfng c\u0169ng l\u1edbn nh\u1ea5t trong v\u0169 tr\u1ee5 h\u1ecdc hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n\n\n
Thuy\u1ebft v\u0169 tr\u1ee5 n\u1ed5 l\u1edbn chia qu\u00e1 tr\u00ecnh bi\u1ebfn ho\u00e1 c\u1ee7a hai m\u01b0\u01a1i t\u1ef7 n\u0103m v\u0169 tr\u1ee5 th\u00e0nh ba giai \u0111o\u1ea1n. Giai \u0111o\u1ea1n th\u1ee9 nh\u1ea5t l\u00e0 th\u1eddi k\u1ef3 s\u1edbm nh\u1ea5t c\u1ee7a v\u0169 tr\u1ee5. Khi \u0111\u00f3 v\u1ee5 n\u1ed5 v\u1eeba m\u1edbi b\u1eaft \u0111\u1ea9u kh\u00f4ng l\u00e2u, v\u0169 tr\u1ee5 \u1edf tr\u1ea1ng th\u00e1i nhi\u1ec7t \u0111\u1ed9 r\u1ea5t cao, \u0111\u1ed9 d\u00e0y \u0111\u1eb7c cao, nhi\u1ec7t \u0111\u1ed9 \u0111\u1ea1t \u0111\u1ebfn tr\u00ean m\u01b0\u1eddi t\u1ef7 \u0111\u1ed9 C. D\u01b0\u1edbi \u0111i\u1ec1u ki\u1ec7n n\u00e0y, kh\u00f4ng c\u1ea9n n\u00f3i kh\u00f4ng c\u00f3 cu\u1ed9c s\u1ed1ng t\u1ed3n t\u1ea1i, \u0111\u1ebfn ngay c\u1ea3 Tr\u00e1i \u0111\u1ea5t, M\u1eb7t tr\u0103ng, M\u1eb7t tr\u1eddi v\u00e0 t\u1ea5t c\u1ea3 nh\u1eefng thi\u00ean th\u1ec3 c\u0169ng \u0111\u1ec1u kh\u00f4ng th\u1ec3 t\u1ed3n t\u1ea1i \u0111\u01b0\u1ee3c, th\u1eadm ch\u00ed kh\u00f4ng c\u00f3 b\u1ea5t k\u1ef3 m\u1ed9t nguy\u00ean t\u1ed1 ho\u00e1 h\u1ecdc n\u00e0o t\u1ed3n t\u1ea1i. Trong kh\u00f4ng gian v\u0169 tr\u1ee5 ch\u1ec9 c\u00f3 m\u1ed9t v\u00e0i v\u1eadt ch\u1ea5t \u1edf tr\u1ea1ng th\u00e1i h\u1ea1t c\u01a1 b\u1ea3n n\u01a1tron, proton, h\u1ea1t nh\u00e2n, photon, n\u01a1trin\u00f4\u2026 v\u0169 tr\u1ee5 \u0111\u1ee9ng \u1edf trong th\u1eddi gian n\u00e0y r\u1ea5t ng\u1eafn, ng\u1eafn \u0111\u1ebfn n\u1ed7i ch\u1ec9 t\u00ednh b\u1eb1ng gi\u00e2y.<\/p>\n\n\n\n
C\u00f9ng v\u1edbi s\u1ef1 d\u00e3n n\u1edf kh\u00f4ng ng\u1eebng c\u1ee7a h\u1ec7 th\u1ed1ng v\u0169 tr\u1ee5, nhi\u1ec7t \u0111\u1ed9 nhanh ch\u00f3ng h\u1ea1 xu\u1ed1ng. Khi nhi\u1ec7t \u0111\u1ed9 h\u1ea1 xu\u1ed1ng m\u1ed9t t\u1ef7 \u0111\u1ed9 C c\u0169ng l\u00e0 l\u00fac v\u0169 tr\u1ee5 b\u01b0\u1edbc v\u00e0o giai \u0111o\u1ea1n th\u1ee9 hai, c\u00e1c nguy\u00ean t\u1ed1 ho\u00e1 h\u1ecdc \u0111\u01b0\u1ee3c b\u1eaft \u0111\u1ea9u h\u00ecnh th\u00e0nh trong th\u1eddi gian n\u00e0y. Trong giai \u0111o\u1ea1n n\u00e0y, nhi\u1ec7t \u0111\u1ed9 gi\u1ea3m \u0111\u1ebfn m\u1ed9t tri\u1ec7u \u0111\u1ed9 C, l\u00fac n\u00e0y, qu\u00e1 tr\u00ecnh h\u00ecnh th\u00e0nh c\u00e1c nguy\u00ean t\u1ed1 ho\u00e1 h\u1ecdc ban \u0111\u1ea9u \u0111\u00e3 k\u1ebft th\u00fac. V\u1eadt ch\u1ea5t c\u1ee7a kh\u00f4ng gian v\u0169 tr\u1ee5 ch\u1ee7 y\u1ebfu l\u00e0 proton, h\u1ea1t nh\u00e2n, protonv\u00e0 m\u1ed9t v\u00e0i h\u1ea1t nguy\u00ean t\u1eed kh\u00e1 nh\u1eb9, b\u1ee9c x\u1ea1 \u00e1nh s\u00e1ng v\u1eabn m\u1ea1nh, v\u00e0 c\u0169ng nh\u01b0 \u1edf giai \u0111o\u1ea1n tr\u01b0\u1edbc kh\u00f4ng t\u1ed3n t\u1ea1i tinh th\u1ec3. Giai \u0111o\u1ea1n th\u1ee9 hai tr\u1ea3i qua kho\u1ea3ng v\u00e0i ngh\u00ecn n\u0103m.<\/p>\n\n\n\n
Khi nhi\u1ec7t \u0111\u1ed9 gi\u1ea3m xu\u1ed1ng v\u00e0i ngh\u00ecn \u0111\u1ed9 C, v\u0169 tr\u1ee5 ti\u1ebfn \u0111\u1ebfn giai \u0111o\u1ea1n th\u1ee9 ba. Thep l\u1ecbch s\u1eed v\u0169 tr\u1ee5 c\u1ee7a hai m\u01b0\u01a1i t\u1ef7 n\u0103m tr\u1edf l\u1ea1i \u0111\u00e2y th\u00ec giai \u0111o\u1ea1n n\u00e0y l\u00e0 d\u00e0i nh\u1ea5t, \u0111\u1ebfn ng\u00e0y nay ch\u00fang ta v\u1eabn \u0111ang s\u1ed1ng trong giai \u0111o\u1ea1n n\u00e0y. Do s\u1ef1 gi\u1ea3m xu\u1ed1ng c\u1ee7a nhi\u1ec7t \u0111\u1ed9, b\u1ee9c x\u1ea1 c\u0169ng d\u1ea9n d\u1ea9n y\u1ebfu \u0111i. Trong kh\u00f4ng gian v\u0169 tr\u1ee5 tr\u00e0n \u0111\u1ea9y v\u1eadt ch\u1ea5t th\u1ec3 kh\u00ed, nh\u1eefng th\u1ec3 kh\u00ed n\u00e0y d\u1ea9n d\u1ea9n ng\u01b0ng t\u1ee5 th\u00e0nh tinh v\u00e2n (nebula), h\u00ecnh th\u00e0nh th\u00eam h\u1ec7 th\u1ed1ng c\u00e1c v\u00ec sao mu\u00f4n h\u00ecnh v\u1ea1n tr\u1ea1ng, tr\u1edf th\u00e0nh th\u1ebf gi\u1edbi tr\u1eddi sao v\u1edbi c\u00e1c s\u1eafc m\u00e0u s\u1eb7c s\u1ee1 m\u00e0 ng\u00e0y nay ch\u00fang ta nh\u00ecn th\u1ea5y. \u0110\u00e2y ch\u00ednh l\u00e0 b\u1ee9c tranh \u0111\u1ea1i th\u1ec3 c\u1ee7a v\u1ee5 n\u1ed5 l\u1edbn v\u0169 tr\u1ee5 m\u00e0 ch\u00fang ta \u0111ang n\u00f3i \u0111\u1ebfn.<\/p>\n\n\n\n
Khi l\u00fd lu\u1eadn v\u1ee5 n\u1ed5 l\u1edbn v\u1eeba n\u00eau ra, n\u00f3 kh\u00f4ng nh\u1eadn \u0111\u01b0\u1ee3c s\u1ef1 \u0111\u00e1nh gi\u00e1 cao c\u1ee7a qu\u1ea3ng \u0111ai qu\u1ea9n ch\u00fang. Nh\u01b0ng, sau h\u01a1n 70 n\u0103m sau khi sinh ra, n\u00f3 l\u1ea1i kh\u00f4ng ng\u1eebng nh\u1eadn \u0111\u01b0\u1ee3c s\u1ef1 \u1ee7ng h\u1ed9 c\u1ee7a nh\u1eefng quan tr\u1eafc thi\u00ean v\u0103n th\u1ef1c t\u1ebf.<\/p>\n\n\n\n
V\u00ed d\u1ee5, m\u1ecdi ng\u01b0\u1eddi quan s\u00e1t \u0111\u01b0\u1ee3c \u0111\u01b0\u1eddng h\u1ed3ng \u0111\u01b0\u1eddng ph\u1ed5 c\u00f3 t\u00ednh h\u1ec7 th\u1ed1ng c\u1ee7a nh\u1eefng thi\u00ean th\u1ec3 ngo\u00e0i h\u1ec7 Ng\u00e2n h\u00e0, d\u00f9ng hi\u1ec7u \u1ee9ng \u0111a ph\u1ed5 \u0111\u1ec3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y, \u0111\u01b0\u1eddng h\u1ed3ng ch\u00ednh l\u00e0 ph\u1ea3n \u1ee9ng c\u1ee7a d\u00e3n n\u1edf v\u0169 tr\u1ee5, \u0111i\u1ec1u n\u00e0y ho\u00e0n to\u00e0n ph\u00f9 h\u1ee3p v\u1edbi l\u00fd lu\u1eadn v\u1ee5 n\u1ed5 l\u1edbn.<\/p>\n\n\n\n
Theo l\u00fd lu\u1eadn v\u1ee5 n\u1ed5 l\u1edbn, nhi\u1ec7t \u0111\u1ed9 v\u0169 tr\u1ee5 ng\u00e0y nay ch\u1ec9 c\u00f2n m\u1ea5y \u0111\u1ed9 nhi\u1ec7t \u0111\u1ed9 tuy\u1ec7t \u0111\u1ed1i. S\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a b\u1ee9c x\u1ea1 b\u1ed1i c\u1ea3nh v\u0169 tr\u1ee5 3K trong nh\u1eefng n\u0103m 60 c\u1ee7a th\u1ebf k\u1ef7 20 \u1ee7ng h\u1ed9 m\u1ea1nh m\u1ebd cho lu\u1eadn \u0111i\u1ec3m n\u00e0y.<\/p>\n\n\n\n
C\u00f3 s\u1ef1 \u1ee7ng h\u1ed9 quan tr\u1eafc th\u1ef1c t\u1ebf n\u00e0y, cu\u1ed1i c\u00f9ng l\u00e0m cho v\u1ee5 n\u1ed5 l\u1edbn gi\u00e0nh \u0111\u01b0\u1ee3c v\u01b0\u01a1ng mi\u1ec7n \u201cMinh tinh\u201d trong nhi\u1ec1u h\u1ecdc thuy\u1ebft c\u00f3 li\u00ean quan \u0111\u1ebfn s\u1ef1 b\u1eaft \u0111\u1ea9u c\u1ee7a v\u0169 tr\u1ee5. Sau \u0111\u00f3, l\u00fd lu\u1eadn v\u0169 tr\u1ee5 v\u1ee5 n\u1ed5 l\u1edbn c\u0169ng v\u1eabn c\u00f2n t\u1ed3n t\u1ea1i m\u1ed9t v\u00e0i v\u1ea5n \u0111\u1ec1 kh\u00f3 kh\u0103n v\u1eabn ch\u01b0a gi\u1ea3i quy\u1ebft \u0111\u01b0\u1ee3c, c\u00f2n ph\u1ea3i \u0111\u1ee3i nh\u1eefng nghi\u00ean c\u1ee9u s\u00e2u s\u1eafc v\u00e0 gi\u00e0nh \u0111\u01b0\u1ee3c c\u00e0ng nhi\u1ec1u nh\u1eefng t\u01b0 li\u1ec7u quan s\u00e1t, m\u1edbi c\u00f3 k\u1ebft lu\u1eadn h\u01a1n n\u1eefa.<\/p>\n","protected":false},"excerpt":{"rendered":"
V\u0169 tr\u1ee5 b\u1eaft ngu\u1ed3n nh\u01b0 th\u1ebf n\u00e0o? T\u1eeb c\u1ed5 ch\u00ed kim, t\u1eeb trong \u0111\u1ebfn ngo\u00e0i ai c\u0169ng \u0111\u1ec1u quan t\u00e2m \u0111\u1ebfn v\u1ea5n \u0111\u1ec1 n\u00e0y. V\u1ec1 ph\u01b0\u01a1ng di\u1ec7n n\u00e0y c\u00f3 r\u1ea5t nhi\u1ec1u truy\u1ec1n thuy\u1ebft, th\u1ea9n tho\u1ea1i, c\u0169ng c\u00f3 ng\u01b0\u1eddi n\u00eau ra kh\u00f4ng \u00edt gi\u1ea3 thuy\u1ebft khoa h\u1ecdc. Nh\u00e0 thi\u00ean v\u0103n h\u1ecdc ng\u01b0\u1eddi M\u1ef9 James\u0111\u00e3 t\u1eebng n\u00eaul\u00ean […]<\/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":[1,15],"tags":[],"class_list":["post-11122","post","type-post","status-publish","format-standard","hentry","category-general","category-hoi-dap-khoa-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/11122","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=11122"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/11122\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=11122"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=11122"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=11122"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}