{"id":1748,"date":"2020-04-07T16:38:58","date_gmt":"2020-04-07T15:38:58","guid":{"rendered":"https:\/\/slowlylife.wordpress.com\/?p=1748"},"modified":"2021-06-19T17:21:51","modified_gmt":"2021-06-19T16:21:51","slug":"vao-ngay-sinh-nhat-nam-19-tuoi-cua-minh-da-co-mot-dieu-khung-khiep-xay-ra-tren-vu-tru","status":"publish","type":"post","link":"https:\/\/hoangthilinhchi.com\/?p=1748","title":{"rendered":"V\u00e0o ng\u00e0y sinh nh\u1eadt n\u0103m 19 tu\u1ed5i c\u1ee7a m\u00ecnh, \u0111\u00e3 c\u00f3 m\u1ed9t \u0111i\u1ec1u kh\u1ee7ng khi\u1ebfp x\u1ea3y ra tr\u00ean v\u0169 tr\u1ee5…"},"content":{"rendered":"\n

K\u00ednh vi\u1ec5n v\u1ecdng Hubble \u0111\u00e3 c\u00f3 c\u00e1i nh\u00ecn c\u1eadn c\u1ea3nh v\u1ec1 m\u1ed9t ng\u00f4i sao ch\u1ed5i \u0111ang tan r\u00e3<\/h2>\n\n\n\n

T\u00f3m t\u1eaft<\/h1>\n\n\n\n

Ng\u00f4i sao ch\u1ed5i 332P\/Ikeya-Murakami \u0111\u00e3 t\u1ed3n t\u1ea1i 4.5 t\u1ec9 n\u0103m trong V\u00f2ng Kuiper b\u0103ng gi\u00e1, m\u1ed9t h\u1ed3 ch\u1ee9a kh\u1ed5ng l\u1ed3 c\u1ee7a nh\u1eefng v\u1eadt th\u1ec3 \u0111\u00f3ng b\u0103ng \u1edf b\u00ean ngo\u00e0i H\u1ec7 m\u1eb7t tr\u1eddi c\u1ee7a ch\u00fang ta. Nh\u1eefng v\u1eadt th\u1ec3 n\u00e0y l\u00e0 ph\u1ea7n c\u00f2n l\u1ea1i c\u1ee7a vi\u1ec7c t\u1ea1o d\u1ef1ng n\u00ean H\u1ec7 m\u1eb7t tr\u1eddi. Nh\u01b0ng trong v\u00f2ng v\u00e0i tri\u1ec7u n\u0103m tr\u1edf l\u1ea1i \u0111\u00e2y, nh\u1eefng ng\u00f4i sao ch\u1ed5i k\u00e9m may m\u1eafn \u0111\u00e3 b\u1ecb tr\u1ecdng l\u1ef1c \u0111\u1ea9y kh\u1ecfi trung t\u00e2m c\u1ee7a H\u1ec7 M\u1eb7t tr\u1eddi b\u1edfi nh\u1eefng h\u00e0nh tinh \u1edf b\u00ean ngo\u00e0i. Ng\u00f4i sao ch\u1ed5i v\u1edbi c\u00e1i t\u00ean 332P, t\u00ecm \u0111\u01b0\u1ee3c n\u01a1i tr\u00fa ng\u1ee5 m\u1edbi, y\u00ean \u1ed5n tr\u00ean m\u1ed9t qu\u1ef9 \u0111ajo ngay ngo\u00e0i Sao H\u1ecfa. Nh\u01b0ng ng\u00f4i nh\u00e0 m\u1edbi n\u00e0y, g\u1ea7n h\u01a1n v\u1edbi M\u1eb7t tr\u1eddi v\u00e0 \u0111\u00e3 x\u1eed l\u00fd ng\u00f4i sao ch\u1ed5i b\u00e9 nh\u1ecf. \u00c1nh s\u00e1ng m\u1eb7t tr\u1eddi \u0111\u1ed1t n\u00f3ng b\u1ec1 m\u1eb7t sao ch\u1ed5i 332P, d\u1eabn t\u1edbi vi\u1ec7c nh\u1eefng tia kh\u00ed ga v\u00e0 b\u1ee5i phun tr\u00e0o. Nh\u1eefng tia n\u00e0y ho\u1ea1t \u0111\u1ed9ng nh\u01b0 nh\u1eefng \u0111\u1ed9ng c\u01a1 ph\u1ea3n l\u1ef1c, \u0111\u1ea9y nhanh v\u00f2ng quay c\u1ee7a sao ch\u1ed5i. T\u1ed1c \u0111\u1ed9 quay v\u00f2ng nhanh h\u01a1n l\u00e0m ph\u00e2n r\u00e3 nh\u1eefng kh\u1ed1i v\u1eadt ch\u1ea5t m\u00e0 sau \u0111\u00f3 s\u1ebd b\u1ecb cu\u1ed1n bay kh\u1ecfi b\u1ec1 m\u1eb7t v\u00e0 v\u00e0o trong kh\u00f4ng gian.<\/p>\n\n\n\n

K\u00ednh vi\u1ec5n v\u1ecdng kh\u00f4ng gian Hubble \u0111\u00e3 b\u1eaft \u0111\u01b0\u1ee3c \u0111\u00e1m m\u00e2y m\u1ea3nh v\u1ee1 tho\u00e1t ra t\u1eeb sao ch\u1ed5i 332P. Nh\u1eefng h\u00ecnh \u1ea3nh n\u00e0y \u0111\u01b0\u1ee3c ghi l\u1ea1i trong h\u01a1n 3 ng\u00e0y v\u00e0o th\u00e1ng 1 n\u0103m 2016, l\u00e0 nh\u1eefng h\u00ecnh \u1ea3nh s\u1eafc n\u00e9t nh\u1ea5t, chi ti\u1ebft nh\u1ea5t v\u1ec1 vi\u1ec7c m\u1ed9t sao ch\u1ed5i v\u1ee1 tung th\u00e0nh nhi\u1ec1u m\u1ea3nh. Hubble \u0111\u00e3 ti\u1ebft l\u1ed9 v\u1ec1 25 m\u1ea3nh v\u1ee1 c\u00f3 k\u00edch th\u01b0\u1edbc ngang v\u1edbi 1 t\u00f2a nh\u00e0 t\u1eeb ng\u00f4i sao ch\u1ed5i tr\u00f4i trong kh\u00f4ng gian b\u1eb1ng t\u1ed1c \u0111\u1ed9 \u0111i b\u1ed9 b\u00ecnh th\u01b0\u1eddng c\u1ee7a ng\u01b0\u1eddi tr\u01b0\u1edfng th\u00e0nh. V\u1eadt ch\u1ea5t s\u1ebd ti\u1ebfp t\u1ee5c tan r\u00e3 t\u1eeb sao ch\u1ed5i 332P. Nh\u1eefng nh\u00e0 thi\u00ean v\u0103n h\u1ecdc \u0111\u00e1nh gi\u00e1 r\u1eb1ng ng\u00f4i sao \u0111\u00e3 t\u1ed3n t\u1ea1i trong su\u1ed1t 4,5 t\u1ec9 n\u0103m n\u00e0y s\u1ebd bi\u1ebfn m\u1ea5t trong 150 n\u0103m n\u1eefa.<\/p>\n\n\n\n

Comet 332P\/Ikeya-Murakami<\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

K\u00ednh vi\u1ec5n v\u1ecdng kh\u00f4ng gian c\u1ee7a NASA \u0111\u00e3 b\u1eaft \u0111\u01b0\u1ee3c m\u1ed9t trong nh\u1eefng h\u00ecnh \u1ea3nh s\u1eafc n\u00e9t nh\u1ea5t, chi ti\u1ebft nh\u1ea5t trong khi quan s\u00e1t m\u1ed9t ng\u00f4i sao ch\u1ed5i tan v\u1ee1 \u1edf c\u00e1ch Tr\u00e1i \u0111\u1ea5t 67 tri\u1ec7u d\u1eb7m (kho\u1ea3ng 108 tri\u1ec7u km).<\/p>\n\n\n\n

Trong lo\u1ea1t h\u00ecnh \u1ea3nh \u0111\u01b0\u1ee3c ghi l\u1ea1i trong h\u01a1n 3 ng\u00e0y v\u00e0o th\u00e1ng 1 n\u0103m 2016, Hubble \u0111\u00e3 ti\u1ebft l\u1ed9 v\u1ec1 25 m\u1ea3nh v\u1ee1 t\u1ea1o th\u00e0nh t\u1eeb h\u1ed7n h\u1ee3p b\u0103ng v\u00e0 b\u1ee5i, c\u00f3 k\u00edch th\u01b0\u1edbc ngang v\u1edbi 1 t\u00f2a nh\u00e0, tr\u00f4i kh\u1ecfi ng\u00f4i sao ch\u1ed5i kh\u00e1 ch\u1eadm r\u00e3i, t\u01b0\u01a1ng \u0111\u01b0\u01a1ng t\u1ed1c \u0111\u1ed9 \u0111i b\u1ed9 b\u00ecnh th\u01b0\u1eddng c\u1ee7a ng\u01b0\u1eddi tr\u01b0\u1edfng th\u00e0nh<\/p>\n\n\n\n

S\u1ef1 quan s\u00e1t n\u00e0y \u0111\u00e3 cho th\u1ea5y m\u1ed9t ng\u00f4i sao ch\u1ed5i mang t\u00ean 332P\/Ikeya-Murakami hay Sao ch\u1ed5i 332P, c\u00f3 tu\u1ed5i \u0111\u1eddi kho\u1ea3ng 4,5 t\u1ec9 n\u0103m, c\u00f3 th\u1ec3 \u0111\u00e3 quay quanh tr\u1ee5c c\u1ee7a n\u00f3 qu\u00e1 nhanh d\u1eabn \u0111\u1ebfn s\u1ef1 ph\u00e2n r\u00e3 c\u00e1c v\u1eadt ch\u1ea5t v\u00e0 v\u0103ng ra kh\u1ecfi b\u1ec1 m\u1eb7t c\u1ee7a ch\u00ednh n\u00f3. Nh\u1eefng m\u1ea3nh v\u1ee1 n\u00e0y hi\u1ec7n nay \u0111\u00e3 ph\u00e2n t\u00e1n th\u00e0nh m\u1ed9t v\u1ec7t d\u00e0i kho\u1ea3ng 3000 d\u1eb7m (kho\u1ea3ng 4828 km), r\u1ed9ng h\u01a1n c\u1ea3 b\u1ec1 ngang c\u1ee7a l\u1ee5c \u0111\u1ecba M\u1ef9.<\/p>\n\n\n\n

Nh\u1eefng s\u1ef1 quan s\u00e1t n\u00e0y c\u00f2n cung c\u1ea5p nh\u1eefng th\u00f4ng tin c\u1ee5 th\u1ec3 v\u1ec1 s\u1ef1 thay \u0111\u1ed5i \u0111\u1ed9t ng\u1ed9t c\u1ee7a nh\u1eefng sao ch\u1ed5i khi ch\u00fang \u0111\u1ebfn g\u1ea7n m\u1eb7t tr\u1eddi v\u00e0 b\u1eaft \u0111\u1ea7u b\u1ed1c h\u01a1i, l\u00e0m tho\u00e1t ra nh\u1eefng \u201cl\u1ef1c \u0111\u1ed9ng h\u1ecdc\u201d (dynamical forces). Khi Hubble ph\u00e1t hi\u1ec7n ra s\u1ef1 ph\u00e2n r\u00e3, Sao ch\u1ed5i 332P l\u00fac \u0111\u00f3 \u0111\u00e3 \u1edf c\u00e1ch M\u1eb7t tr\u1eddi 150 ngh\u00ecn d\u1eb7m (kho\u1ea3ng 241400 km), xa m\u1ed9t ch\u00fat \u1edf ngo\u00e0i qu\u1ef9 \u0111\u1ea1o c\u1ee7a sao H\u1ecfa.<\/p>\n\n\n\n

 \u201cCh\u00fang ta bi\u1ebft r\u1eb1ng Sao ch\u1ed5i c\u00f3 s\u1ef1 tan r\u00e3, nh\u01b0ng ch\u00fang ta ch\u01b0a bi\u1ebft \u0111\u01b0\u1ee3c v\u00ec sao c\u00f3 s\u1ef1 tan r\u00e3 \u0111\u00f3,\u201d \u2013 nh\u00e0 nghi\u00ean c\u1ee9u ch\u00ednh David Jewitt c\u1ee7a \u0110\u1ea1i h\u1ecdc California t\u1ea1i Los Angeles. \u201cV\u1ea5n \u0111\u1ec1 l\u00e0 \u0111i\u1ec1u \u0111\u00f3 x\u1ea3y ra nhanh ch\u00f3ng v\u00e0 kh\u00f4ng h\u1ec1 c\u00f3 d\u1ef1 b\u00e1o tr\u01b0\u1edbc, n\u00ean ch\u00fang ra kh\u00f4ng c\u00f3 c\u01a1 h\u1ed9i \u0111\u1ec3 thu th\u1eadp nh\u1eefng d\u1eef li\u1ec7u h\u1eefu \u00edch. V\u1edbi \u0111\u1ed9 ph\u00e2n gi\u1ea3i tuy\u1ec7t v\u1eddi c\u1ee7a Hubble, kh\u00f4ng ch\u1ec9 ch\u00fang ta \u0111\u01b0\u1ee3c nh\u00ecn th\u1ea5y t\u1eebng m\u1ea9u nh\u1ecf m\u1edd nh\u1ea1t c\u1ee7a sao ch\u1ed5i, m\u00e0 ch\u00fang ta c\u00f2n c\u00f3 th\u1ec3 xem \u0111\u01b0\u1ee3c s\u1ef1 thay \u0111\u1ed5i ng\u00e0y qua ng\u00e0y c\u1ee7a ch\u00fang. V\u00e0 vi\u1ec7c n\u00e0y cho ph\u00e9p ch\u00fang ta c\u00f3 \u0111\u01b0\u1ee3c nh\u1eefng \u0111o \u0111\u1ea1c ch\u00ednh x\u00e1c nh\u1ea5t t\u1eebng \u0111\u1ea1t \u0111\u01b0\u1ee3c.<\/p>\n\n\n\n

Vi\u1ec7c quan s\u00e1t trong ba ng\u00e0y n\u00e0y \u0111\u00e3 v\u00e9n m\u00e0n cho vi\u1ec7c nh\u1eefng m\u1ea3nh v\u1ee1 s\u00e1ng l\u00ean v\u00e0 m\u1edd \u0111i nh\u01b0 nh\u1eefng m\u1ea3nh b\u0103ng tr\u00ean b\u1ec1 m\u1eb7t c\u1ee7a ch\u00fang lu\u00e2n phi\u00ean nhau \u0111\u01b0\u1ee3c m\u1eb7t tr\u1eddi chi\u1ebfu v\u00e0o. H\u00ecnh d\u00e1ng c\u1ee7a  ch\u00fang c\u0169ng thay \u0111\u1ed5i khi b\u1ecb ph\u00e2n r\u00e3. Nh\u1eefng di t\u00edch b\u0103ng c\u00f2n l\u1ea1i chi\u1ebfm \u0111\u1ebfn kho\u1ea3ng 4% sao ch\u1ed5i m\u1eb9 v\u00e0 c\u00f3 k\u00edch th\u01b0\u1edbc b\u1ec1 ngang n\u1eb1m trong kho\u1ea3ng t\u1eeb 65 feet \u0111\u1ebfn 200 feet (kho\u1ea3ng 20m \u0111\u1ebfn 60m). Ch\u00fang \u0111ang chuy\u1ec3n \u0111\u1ed9ng t\u00e1ch xa nhau v\u1edbi t\u1ed1c \u0111\u1ed9 v\u00e0i d\u1eb7m tr\u00ean gi\u1edd.<\/p>\n\n\n\n

Nh\u1eefng h\u00ecnh \u1ea3nh c\u1ee7a Hubble ch\u1ec9 ra r\u1eb1ng sao ch\u1ed5i cha m\u1eb9 c\u0169ng thay \u0111\u1ed5i \u0111\u1ed9 s\u00e1ng theo chu k\u00ec, ho\u00e0n th\u00e0nh m\u1ed9t v\u00f2ng quanh m\u1ed7i 2-4 gi\u1edd. M\u1ed9t h\u00e0nh kh\u00e1ch \u0111\u1ebfn sao ch\u1ed5i c\u00f3 th\u1ec3 th\u1ea5y \u0111\u01b0\u1ee3c b\u00ecnh minh v\u00e0 ho\u00e0ng h\u00f4n ch\u1ec9 trong \u00edt h\u01a1n 1 gi\u1edd. M\u1ed9t ng\u00f4i sao ch\u1ed5i c\u0169ng nh\u1ecf h\u01a1n nh\u1eefng nh\u00e0 thi\u00ean h\u1ecdc v\u0103n ngh\u0129 r\u1ea5t nhi\u1ec1u, ch\u1ec9 trong kho\u1ea3ng 1600 feet (kho\u1ea3ng 488m) chi\u1ec1u ngang v\u00e0 chi\u1ec1u d\u00e0i c\u1ee7a kho\u1ea3ng 5 s\u00e2n b\u00f3ng \u0111\u00e1.<\/p>\n\n\n\n

Sao ch\u1ed5i 332P \u0111\u01b0\u1ee3c kh\u00e1m ph\u00e1 v\u00e0o th\u00e1ng 11 n\u0103m 2012, sau khi n\u00f3 b\u1eebng s\u00e1ng l\u00ean v\u00e0 \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n ra b\u1edfi 2 nh\u00e0 thi\u00ean v\u0103n h\u1ecdc kh\u00f4ng chuy\u00ean l\u00e0 Kaoru Ikeya v\u00e0 Shikegi Murakami.<\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

D\u1ef1a tr\u00ean d\u1eef li\u1ec7u c\u1ee7a Hubble, \u0111\u1ed9i ng\u0169 nghi\u00ean c\u1ee9u \u0111\u00e3 d\u1ef1 \u0111o\u00e1n r\u1eb1ng \u00e1nh s\u00e1ng m\u1eb7t tr\u1eddi \u0111\u00e3 l\u00e0m n\u00f3ng sao ch\u1ed5i, d\u1eabn t\u1edbi vi\u1ec7c nh\u1eefng tia kh\u00ed ga v\u00e0 b\u1ee5i phun tr\u00e0o. B\u1edfi v\u00ec nh\u1eefng h\u1ea1t nh\u00e2n nguy\u00ean t\u1eed qu\u00e1 nh\u1ecf n\u00ean nh\u1eefng tia n\u00e0y ho\u1ea1t \u0111\u1ed9ng nh\u01b0 nh\u1eefng \u0111\u1ed9ng c\u01a1 ph\u1ea3n l\u1ef1c, \u0111\u1ea9y nhanh v\u00f2ng quay c\u1ee7a sao ch\u1ed5i. T\u1ed1c \u0111\u1ed9 quay v\u00f2ng nhanh h\u01a1n l\u00e0m ph\u00e2n r\u00e3 nh\u1eefng kh\u1ed1i v\u1eadt ch\u1ea5t m\u00e0 sau \u0111\u00f3 s\u1ebd b\u1ecb cu\u1ed1n bay kh\u1ecfi b\u1ec1 m\u1eb7t v\u00e0 v\u00e0o trong kh\u00f4ng gian.<\/p>\n\n\n\n

\u0110\u1ed9i ng\u0169 nghi\u00ean c\u1ee9u t\u00ednh to\u00e1n r\u1eb1ng sao ch\u1ed5i s\u1ebd l\u00e0m r\u01a1i nh\u1eefng v\u1eadt ch\u1ea5t n\u00e0y trong v\u00e0i th\u00e1ng, trong kho\u1ea3ng th\u00e1ng 10 v\u00e0 th\u00e1ng 12 n\u0103m 2015. Jewitt cho r\u1eb1ng th\u1eadm ch\u00ed m\u1ed9t v\u00e0i trong nh\u1eefng m\u1ea3nh v\u1ee1 tho\u00e1t ra \u0111\u00e3 t\u1ef1 ch\u00fang tan ra theo m\u1ed9t d\u1ea1ng tan r\u00e3 t\u1eebng \u0111\u1ee3t *cascading fragmentation*. \u201cNh\u1eefng th\u1ed1ng k\u00ea c\u1ee7a ch\u00fang t\u00f4i cho th\u1ea5y r\u1eb1ng nh\u1eefng s\u1ef1 tan r\u00e3 nh\u1ecf h\u01a1n th\u00ec kh\u00f4ng nhi\u1ec1u nh\u01b0 d\u1ef1 \u0111o\u00e1n d\u1ef1a tr\u00ean s\u1ed1 l\u01b0\u1ee3ng c\u1ee7a nh\u1eefng mi\u1ebfng l\u1edbn h\u01a1n.  \u0110\u00e2y l\u00e0 m\u1ed9t g\u1ee3i \u00fd v\u1ec1 vi\u1ec7c ch\u00fang \u0111ang b\u1ecb ph\u00e2n r\u00e3 k\u1ec3 c\u1ea3 trong nh\u1eefng th\u00e1ng t\u1eeb khi ch\u00fang b\u1eaft \u0111\u1ea7u t\u00e1ch ra t\u1eeb kh\u1ed1i \u0111\u1ea7u ti\u00ean. Ch\u00fang t\u00f4i ngh\u0129 r\u1eb1ng nh\u1eefng m\u1ea3nh v\u1ee1 n\u00e0y s\u1ebd ch\u1ec9 s\u1ed1ng m\u1ed9t cu\u1ed9c \u0111\u1eddi r\u1ea5t ng\u1eafn th\u00f4i.\u201d<\/p>\n\n\n\n

T\u1ea7m nh\u00ecn nh\u1ea1y b\u00e9n c\u1ee7a Hubble c\u00f2n do th\u00e1m \u0111\u01b0\u1ee3c m\u1ed9t m\u1ea3nh v\u1eadt ch\u1ea5t g\u1ea7n v\u1edbi ng\u00f4i sao ch\u1ed5i, c\u00f3 th\u1ec3 l\u00e0 lo\u1ea1t \u0111\u1ea7u ti\u00ean c\u1ee7a s\u1ef1 b\u00f9ng n\u1ed5. T\u00e0n d\u01b0 c\u00f2n l\u1ea1i c\u1ee7a ch\u00fang v\u1eabn c\u00f2n l\u00f3e l\u00ean v\u00e0 c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y \u0111\u01b0\u1ee3c, d\u00f9 c\u00f3 th\u1ec3 \u0111\u00e3 x\u1ea3y ra t\u1eeb 2012. Nh\u1eefng m\u1ea3nh n\u00e0y c\u00f3 th\u1ec3 l\u1edbn nh\u01b0 c\u1ee7a sao ch\u1ed5i 332P, d\u1ef1 \u0111o\u00e1n r\u1eb1ng sao ch\u1ed5i c\u00f3 th\u1ec3 \u0111\u00e3 chia \u0111\u00f4i. Nh\u01b0ng nh\u1eefng m\u1ea3nh b\u0103ng \u0111\u00e1 c\u00f2n l\u1ea1i v\u1eabn ch\u01b0a b\u1ecb ph\u00e1t hi\u1ec7n cho t\u1edbi 31\/12\/2015 b\u1edfi Pan-STARRS (K\u00ednh vi\u1ec5n v\u1ecdng quan s\u00e1t to\u00e0n c\u1ea3nh v\u00e0 h\u1ec7 th\u1ed1ng ph\u1ea3n \u1ee9ng nhanh) t\u1ea1i Hawaii, trong m\u1ed9t d\u1ef1 \u00e1n \u0111\u01b0\u1ee3c \u1ee7ng h\u1ed9 b\u1edfi ch\u01b0\u01a1ng tr\u00ecnh Quan s\u00e1t nh\u1eefng v\u1eadt th\u1ec3 g\u1ea7n Tr\u00e1i \u0111\u1ea5t c\u1ee7a V\u0103n ph\u00f2ng ph\u1ed1i h\u1ee3p t\u00e1c chi\u1ebfn h\u00e0nh tinh t\u1ea1i NASA. Kh\u00e1m ph\u00e1 \u0111\u00f3 th\u00fac gi\u1ee5c Jewitt v\u00e0 c\u1ed9ng s\u1ef1 c\u1ee7a m\u00ecnh y\u00eau c\u1ea7u Hubble nh\u00ecn r\u00f5 h\u01a1n v\u00e0o ng\u00f4i sao ch\u1ed5i n\u00e0y. C\u00f9ng l\u00fac \u0111\u00f3, c\u00e1c nh\u00e0 thi\u00ean v\u0103n h\u1ecdc tr\u00ean to\u00e0n th\u1ebf gi\u1edbi b\u1eaft \u0111\u1ea7u ph\u00e1t hi\u1ec7n ra m\u1ed9t m\u1ea3ng m\u00e2y m\u00f9 v\u1eadt ch\u1ea5t \u1edf g\u1ea7n sao ch\u1ed5i, sau \u0111\u00f3 Hubble \u0111\u00e3 ph\u00e2n t\u00edch \u0111\u00e1m m\u00e2y \u0111\u00f3 l\u00e0 25 m\u1ea3nh v\u1ee1 kh\u00e1c nhau.<\/p>\n\n\n\n

 \u201cTrong qu\u00e1 kh\u1ee9, nh\u1eefng nh\u00e0 thi\u00ean v\u0103n h\u1ecdc ngh\u0129 r\u1eb1ng nh\u1eefng ng\u00f4i sao ch\u1ed5i s\u1ebd ch\u1ebft khi ch\u00fang b\u1ecb l\u00e0m n\u00f3ng b\u1edfi m\u1eb7t tr\u1eddi, khi\u1ebfn cho b\u0103ng \u0111\u00e1 tr\u00ean \u0111\u00f3 ch\u1ec9 \u0111\u01a1n gi\u1ea3n l\u00e0 b\u1ed1c h\u01a1i \u0111i\u201d. Jewitt n\u00f3i- \u201cKh\u00f4ng c\u00f2n g\u00ec c\u00f2n l\u1ea1i sau \u0111\u00f3, ho\u1eb7c c\u00f3 th\u1ec3 ch\u1ec9 c\u00f2n m\u1ed9t kh\u1ed1i v\u1eadt ch\u1ea5t n\u1eb7ng n\u1ec1 kh\u00f4ng s\u1ef1 s\u1ed1ng t\u1ea1i n\u01a1i \u0111\u00e3 t\u1eebng t\u1ed3n t\u1ea1i m\u1ed9t ng\u00f4i sao ch\u1ed5i. Nh\u01b0ng \u0111i\u1ec1u \u0111\u00f3 \u0111\u00e3 d\u01b0\u1eddng nh\u01b0 tr\u00f4ng gi\u1ed1ng s\u1ef1 tan r\u00e3. \u1ede sao ch\u1ed5i 332P, ch\u00fang ta c\u00f3 th\u1ec3 th\u1ea5y \u0111\u01b0\u1ee3c m\u1ed9t ng\u00f4i sao ch\u1ed5i t\u1ef1 v\u1ee1 tung v\u00e0 \u0111i v\u00e0o qu\u00ean l\u00e3ng.\u201d<\/p>\n\n\n\n

\u201cNh\u1eefng c\u00e1i nh\u00ecn tho\u00e1ng qua t\u1ed1t nh\u1ea5t c\u1ee7a Hubble tr\u01b0\u1edbc \u0111\u00e2y t\u1edbi m\u1ed9t sao ch\u1ed5i \u0111ang tan t\u00e0nh l\u00e0 trong khi \u0111ang di\u1ec5n ra nh\u1eefng quan s\u00e1t v\u1ec1 73P\/Schwassmann-Wachmann2 (73P) trong M\u00e1y ch\u1ee5p h\u00ecnh ti\u00ean ti\u1ebfn cho quan s\u00e1t (ACS) th\u00e1ng 4 n\u0103m 2006 \u2013 theo Harold Weaver c\u1ee7a ph\u00f2ng nghi\u00ean c\u1ee9u V\u1eadt l\u00fd \u1ee9ng d\u1ee5ng t\u1ea1i \u0111\u1ea1i h\u1ecdc Johns Hopkins, Laurel, Maryland. \u201c\u1ede l\u1ea7n quan s\u00e1t \u0111\u00f3, Hubble \u0111\u00e3 ch\u1ee9ng ki\u1ebfn t\u1eadn m\u1eaft m\u1ed9t ng\u00f4i sao ch\u1ed5i v\u1edbi h\u01a1n 60 m\u1ea3nh v\u1ee1 \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u00ean. Nh\u1eefng h\u00ecnh \u1ea3nh c\u1ee7a Hubble ghi l\u1ea1i \u0111\u00e3 cho th\u1ea5y nh\u1eefng chi ti\u1ebft ch\u01b0a t\u1eebng th\u1ea5y tr\u01b0\u1edbc \u0111\u00e2y v\u1ec1 s\u1ef1 tan v\u1ee1 c\u1ee7a 73P, nh\u01b0ng ng\u00f4i sao ch\u1ed5i v\u1eabn kh\u00f4ng th\u1ec3 \u0111\u01b0\u1ee3c quan s\u00e1t \u0111\u1ee7 l\u00e2u \u0111\u1ec3 \u0111\u01b0a ra nh\u1eefng t\u00e0i li\u1ec7u v\u1ec1 s\u1ef1 thay \u0111\u1ed5i c\u1ee7a nh\u1eefng m\u1ea3nh v\u1ee1 n\u00e0y qua th\u1eddi gian, kh\u00f4ng nh\u01b0 trong tr\u01b0\u1eddng h\u1ee3p c\u1ee7a 332P\u201d.<\/p>\n\n\n\n

Nh\u1eefng nghi\u00ean c\u1ee9u n\u00e0y \u01b0\u1edbc t\u00ednh r\u1eb1ng sao ch\u1ed5i 332P ch\u1ee9a \u0111\u1ee7 kh\u1ed1i l\u01b0\u1ee3ng v\u1eadt ch\u1ea5t \u0111\u1ee7 \u0111\u1ec3 ti\u1ebfp t\u1ee5c t\u1ed3n t\u1ea1i sau 25 c\u00fa n\u1ed5 n\u1eefa. \u201cN\u1ebfu sao ch\u1ed5i n\u00e0y c\u00f3 chu k\u00ec m\u1ed7i 6 n\u0103m, t\u1ee9c l\u00e0 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng 1 qu\u1ef9 \u0111\u1ea1o quanh m\u1eb7t tr\u1eddi, th\u00ec n\u00f3 s\u1ebd bi\u1ebfn m\u1ea5t sau 150 n\u0103m.\u201d \u2013 Jewitt n\u00f3i. \u201cN\u00f3 ch\u1ec9 l\u00e0 trong m\u1ed9t nh\u00e1y m\u1eaft, n\u00f3i theo c\u00e1ch c\u1ee7a thi\u00ean v\u0103n h\u1ecdc. Chuy\u1ebfn \u0111i n\u00e0y t\u1edbi b\u00ean trong h\u1ec7 m\u1eb7t tr\u1eddi s\u1ebd ph\u00e1 h\u1ee7y n\u00f3\u201d.<\/p>\n\n\n\n

Nh\u1eefng c\u01a1n m\u01b0a b\u0103ng \u0111\u00e1 gh\u00e9 th\u0103m t\u1eeb V\u00f2ng Kuiper l\u00e0 m\u1ed9t \u0111\u00e1m kh\u1ed5ng l\u1ed3 nh\u1eefng v\u1eadt th\u1ec3 n\u1eb1m ngo\u00e0i r\u00eca c\u1ee7a h\u1ec7 m\u1eb7t tr\u1eddi. Nh\u1eefng m\u1ea3nh v\u1ee1 n\u00e0y l\u00e0 nh\u1eefng ph\u1ea7n c\u1ee7a l\u1ea1i c\u1ee7a nh\u1eefng vi\u00ean g\u1ea1ch x\u00e2y nh\u00e0 t\u1ea1o n\u00ean t\u1eeb s\u1ef1 x\u00e2y d\u1ef1ng n\u00ean h\u1ec7 m\u1eb7t tr\u1eddi. Sau g\u1ea7n 4,5 t\u1ec9 n\u0103m trong s\u1ef1 b\u0103ng gi\u00e1 s\u00e2u th\u1eb3m n\u00e0y, s\u1ef1 nhi\u1ec5u lo\u1ea1n t\u1eeb tr\u01b0\u1eddng t\u1eeb Sao H\u1ea3i V\u01b0\u01a1ng \u0111\u00e3 \u0111\u00e1 v\u0103ng Sao ch\u1ed5i 332P ra kh\u1ecfi v\u00f2ng Kuiper.<\/p>\n\n\n\n

Khi sao ch\u1ed5i di chuy\u1ec3n qua h\u1ec7 m\u1eb7t tr\u1eddi, n\u00f3 s\u1ebd b\u1ecb l\u00e0m ch\u1ec7ch h\u01b0\u1edbng b\u1edfi nh\u1eefng h\u00e0nh tinh, nh\u01b0 m\u1ed9t qu\u1ea3 b\u00f3ng n\u1ea3y l\u00ean n\u1ea3y xu\u1ed1ng trong m\u00e1y tr\u00f2 ch\u01a1i pinball, cho \u0111\u1ebfn khi tr\u1ecdng l\u1ef1c c\u1ee7a sao M\u1ed9c x\u00e1c \u0111\u1ecbnh l\u1ea1i qu\u1ef9 \u0111\u1ea1o hi\u1ec7n t\u1ea1i c\u1ee7a n\u00f3. Jewitt \u01b0\u1edbc l\u01b0\u1ee3ng r\u1eb1ng m\u1ed9t ng\u00f4i sao ch\u1ed5i \u0111\u1ebfn t\u1eeb V\u00f2ng Kuiper s\u1ebd b\u1ecb n\u00e9m v\u00e0o b\u00ean trong c\u1ee7a h\u1ec7 ng\u00e2n h\u00e0 trong m\u1ed7i 40-100 n\u0103m.<\/p>\n\n\n\n

K\u1ebft qu\u1ea3 s\u1ebd xu\u1ea5t hi\u1ec7n trong \u1ea5n ph\u1ea9m \u201cNh\u1eefng l\u00e1 th\u01b0 c\u1ee7a t\u1eadp san V\u1eadt l\u00fd thi\u00ean th\u1ec3\u201d v\u00e0o ng\u00e0y 15\/9\/2016.<\/p>\n\n\n\n

K\u00ednh vi\u1ec5n v\u1ecdng kh\u00f4ng gian Hubble l\u00e0 m\u1ed9t d\u1ef1 \u00e1n h\u1ee3p t\u00e1c qu\u1ed1c t\u1ebf gi\u1eefa NASA v\u00e0 h\u00e3ng th\u00f4ng t\u1ea5n V\u0169 tr\u1ee5 Ch\u00e2u \u00c2u. Trung t\u00e2m du h\u00e0nh v\u0169 tr\u1ee5 Goddard c\u1ee7a NASA \u1edf Greenbelt, Maryland ch\u1ecbu tr\u00e1ch nhi\u1ec7m qu\u1ea3n l\u00fd chi\u1ebfc k\u00ednh vi\u1ec5n v\u1ecdng n\u00e0y.<\/p>\n\n\n\n

CREDITS:<\/p>\n\n\n\n

NASA, ESA, and D. Jewitt (UCLA)<\/p>\n\n\n\n

KEYWORDS:<\/p>\n\n\n\n

SOLAR SYSTEM COMETS<\/p>\n\n\n\n

CONTACT:<\/p>\n\n\n\n

Felicia Chou<\/p>\n\n\n\n

NASA Headquarters, Washington, D.C.<\/p>\n\n\n\n

202-358-0257<\/p>\n\n\n\n

felicia.chou@nasa.gov<\/p>\n\n\n\n

Donna Weaver \/ Ray Villard<\/p>\n\n\n\n

Space Telescope Science Institute, Baltimore, Maryland<\/p>\n\n\n\n

410-338-4493 \/ 410-338-4514<\/p>\n\n\n\n

dweaver@stsci.edu \/ villard@stsci.edu<\/p>\n\n\n\n

David Jewitt<\/p>\n\n\n\n

University of California, Los Angeles, California<\/p>\n\n\n\n

310-825-2521<\/p>\n\n\n\n

jewitt@ucla.edu<\/p>\n\n\n\n

RELATED LINKS:<\/p>\n\n\n\n

The science paper by D. Jewitt et al. (PDF document)<\/p>\n\n\n\n

NASA’s Hubble Portal<\/p>\n\n\n\n

C\u0169ng ch\u1eb3ng c\u00f3 g\u00ec kh\u1ee7ng khi\u1ebfp \u0111\u00e2u m\u00ecnh \u0111\u00f9a \u0111\u1ea5y!<\/p>\n\n\n\n

Link b\u00e0i vi\u1ebft: https:\/\/hubblesite.org\/contents\/news-releases\/2016\/news-2016-35.html#section-id-2<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

K\u00ednh vi\u1ec5n v\u1ecdng Hubble \u0111\u00e3 c\u00f3 c\u00e1i nh\u00ecn c\u1eadn c\u1ea3nh v\u1ec1 m\u1ed9t ng\u00f4i sao ch\u1ed5i \u0111ang tan r\u00e3 T\u00f3m t\u1eaft Ng\u00f4i sao ch\u1ed5i 332P\/Ikeya-Murakami \u0111\u00e3 t\u1ed3n t\u1ea1i 4.5 t\u1ec9 n\u0103m trong V\u00f2ng Kuiper b\u0103ng gi\u00e1, m\u1ed9t h\u1ed3 ch\u1ee9a kh\u1ed5ng l\u1ed3 c\u1ee7a nh\u1eefng v\u1eadt th\u1ec3 \u0111\u00f3ng b\u0103ng \u1edf b\u00ean ngo\u00e0i H\u1ec7 m\u1eb7t tr\u1eddi c\u1ee7a ch\u00fang ta. 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